{"id":276,"date":"2018-07-01t11:59:31","date_gmt":"2018-07-01t01:59:31","guid":{"rendered":"\/\/www.iolishoes.com\/?page_id=276"},"modified":"2021-07-27t15:28:37","modified_gmt":"2021-07-27t05:28:37","slug":"carotid-normal","status":"publish","type":"page","link":"\/\/www.iolishoes.com\/carotid-normal\/","title":{"rendered":"carotid normal"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"276\" class=\"elementor elementor-276\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-98ac2a5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"98ac2a5\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2fbb1a0\" data-id=\"2fbb1a0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5e589f5f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5e589f5f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-4761fa36\" data-id=\"4761fa36\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5d4f1a09 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"5d4f1a09\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d1fae00 elementor-widget elementor-widget-text-editor\" data-id=\"3d1fae00\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ultrasound of normal common carotid artery (cca). note the smooth echogenic intimal surface.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-4cff6e34\" data-id=\"4cff6e34\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bea2cf5 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"bea2cf5\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-573b7351 elementor-widget elementor-widget-text-editor\" data-id=\"573b7351\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ultrasound of normal carotid bifurcation. common carotid artery (cca). internal carotid artery (ica). external carotid artery (eca)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-440d6a58 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"440d6a58\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-5bfc87d9\" data-id=\"5bfc87d9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7f5ce4b3 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"7f5ce4b3\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1408c26 elementor-widget elementor-widget-text-editor\" data-id=\"1408c26\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>the cca is readily visible. locate it in transverse and rotate into longitudinal.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-677be30\" data-id=\"677be30\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-46101c4c elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"46101c4c\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53d0bbf3 elementor-widget elementor-widget-text-editor\" data-id=\"53d0bbf3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ultrasound of the cca will have a doppler trace that is representative of both upstream and down stream influences. any cardiac arhythmia or significant left heart valvular problems may be relected in the wave form (eg via a audible and visible &#8216;flutter&#8217;). similarly, the cca waveform is a combination of both ica and eca waveforms.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3e937e71 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3e937e71\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7e41441b\" data-id=\"7e41441b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f6a5320 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"f6a5320\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-717622d1 elementor-widget elementor-widget-text-editor\" data-id=\"717622d1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>assess the bifurcation in transverse. rotate on the eca origin to sample it longitudinally.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1efa35b9\" data-id=\"1efa35b9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6bcb97e8 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"6bcb97e8\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a3ab911 elementor-widget elementor-widget-text-editor\" data-id=\"1a3ab911\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ultrasound of the eca waveform is high resistance and may have retrograde flow in diastole. a &#8216;temporal-tap&#8217; (tt) was employed here to confirm it was the eca.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5acc82dc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5acc82dc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7edb9d27\" data-id=\"7edb9d27\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1eca6cf elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"1eca6cf\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62f54a7 elementor-widget elementor-widget-text-editor\" data-id=\"62f54a7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>the ica will have low resistance flow, with constant forward flow during diastole. the ica origin incoporates the bulb which may create a degree of turbulent flow. this should not be mistaken for spectral broadening secondary to pathology.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1da73f69\" data-id=\"1da73f69\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6dbec326 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"6dbec326\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cfed441 elementor-widget elementor-widget-text-editor\" data-id=\"2cfed441\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ultrasound of normal carotid bifurcation with the ica bulb and branch off the eca.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7a2673ae elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7a2673ae\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-63e0580b\" data-id=\"63e0580b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4ae7148d elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"4ae7148d\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48780251 elementor-widget elementor-widget-text-editor\" data-id=\"48780251\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>distal ica scan plane. you may only be able to see a few cm of the ica if there is a high bifurcation.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-672d7347\" data-id=\"672d7347\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-387b6284 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"387b6284\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-469b5d97 elementor-widget elementor-widget-text-editor\" data-id=\"469b5d97\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>unless the vessel is tortuous, you should see a low resistance waveform with a clean spectral window beneath the trace in the ultrasound.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-684644d1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"684644d1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-8e45c69\" data-id=\"8e45c69\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3e67312a elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"3e67312a\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f1af975 elementor-widget elementor-widget-text-editor\" data-id=\"2f1af975\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>transverse bifurcation scan plane.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-5648d6d7\" data-id=\"5648d6d7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6e673ae6 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"6e673ae6\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b9218d elementor-widget elementor-widget-text-editor\" data-id=\"8b9218d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>these transverse ultrasound images show the difference in ica-bulb vs eca at the bifurcation and then approximately 1cm further distal.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2600384c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2600384c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3e680d66\" data-id=\"3e680d66\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-762c2b28 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"762c2b28\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-498626e4 elementor-widget elementor-widget-text-editor\" data-id=\"498626e4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>from the mid-distal cca slide and angle posteriorly to visualise the cervical transverse processes and the vertebral artery.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1d140b82\" data-id=\"1d140b82\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3fff1357 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"3fff1357\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a10ac2d elementor-widget elementor-widget-text-editor\" data-id=\"a10ac2d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ultrasound of the vertebral arteries can be variable in diameter. they should always demonstrate antegrade flow (toward the brain) and be low resistance similar to the ica.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1ad9139c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ad9139c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7f261e\" data-id=\"7f261e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-74f31ab7 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"74f31ab7\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ab54a9a elementor-widget elementor-widget-text-editor\" data-id=\"2ab54a9a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>arrows indicate normal flow direction in the extra cerebrovascular circulation.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-26c4d9e9\" data-id=\"26c4d9e9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2c7d5466 elementor-flip-box--effect-fade elementor-widget elementor-widget-flip-box\" data-id=\"2c7d5466\" data-element_type=\"widget\" data-widget_type=\"flip-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-flip-box\" tabindex=\"0\">\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__front\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"elementor-flip-box__layer elementor-flip-box__back\">\n\t\t\t<div class=\"elementor-flip-box__layer__overlay\">\n\t\t\t\t<div class=\"elementor-flip-box__layer__inner\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5149a83 elementor-widget elementor-widget-text-editor\" data-id=\"5149a83\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>arrows indicate the flow direction in a right sided subclavian steal syndrome.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-30648524 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"30648524\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-24a8b9dc\" data-id=\"24a8b9dc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-59b4da31 elementor-widget elementor-widget-menu-anchor\" data-id=\"59b4da31\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"protocol\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-41e1b2b6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"41e1b2b6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-291396c7\" data-id=\"291396c7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5d995c1b elementor-widget elementor-widget-spacer\" data-id=\"5d995c1b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c835339 elementor-widget elementor-widget-text-editor\" data-id=\"4c835339\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h1 style=\"text-align: center;\">scan protocol<\/h1>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5fdf06ff elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5fdf06ff\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-24593a54\" data-id=\"24593a54\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-36a177a6 elementor-widget elementor-widget-text-editor\" data-id=\"36a177a6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"role_of_ultrasound\"><\/span>role of ultrasound<span class=\"ez-toc-section-end\"><\/span><\/h3><ul><li>to examine the extra-cranial cerebrovascular supply for signs of arterial abnormalities that may be responsible for cerebral or vascular symptoms.<\/li><li>also for preoperative screening of patients with known cardio-vascular risk factors.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-19f73ffc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"19f73ffc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-62ec9d05\" data-id=\"62ec9d05\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2872bd01 elementor-align-right elementor-widget elementor-widget-button\" data-id=\"2872bd01\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"#\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t\t\t\t\t\t<i class=\"fa fa-arrow-circle-o-down\" aria-hidden=\"true\"><\/i>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">click here<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2c131d67\" data-id=\"2c131d67\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-21a9c97b elementor-widget elementor-widget-text-editor\" data-id=\"21a9c97b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><a href=\"\/\/www.iolishoes.com\/uploads\/53003\/ufiles\/carotid\/pathology\/asum_2015-duplex-ultrasound-extracranial-carotid-artery-disease.pdf\" target=\"_blank\" rel=\"noopener\"><strong>for a table showing criteria for ica stenosis classification.<\/strong><\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-69ab7fbf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"69ab7fbf\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-627ca1c6\" data-id=\"627ca1c6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-498ae7a7 elementor-widget elementor-widget-menu-anchor\" data-id=\"498ae7a7\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"limitations\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4ab171dd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4ab171dd\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-49837846\" data-id=\"49837846\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-161d4c81 elementor-widget elementor-widget-text-editor\" data-id=\"161d4c81\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"limitations\"><\/span>limitations<span class=\"ez-toc-section-end\"><\/span><\/h3><p>patient&#8217;s with short thick necks or with high bifurcations pose technical difficulties however manipulation of settings and probe choice will result in an adequate examination in 99% of cases.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-178b7c68 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"178b7c68\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1844822d\" data-id=\"1844822d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-133750e0 elementor-widget elementor-widget-menu-anchor\" data-id=\"133750e0\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"patient\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-49e22710 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"49e22710\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-873a4d2\" data-id=\"873a4d2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-32aa86a6 elementor-widget elementor-widget-text-editor\" data-id=\"32aa86a6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"patient_preparation\"><\/span>patient preparation<span class=\"ez-toc-section-end\"><\/span><\/h3><ul><li>patient positioned supine on the bed, with head slightly extended over pillow.<\/li><li>scan with patient&#8217;s head turned slightly away from the side being examined.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4eb5a1ce elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4eb5a1ce\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-564baa93\" data-id=\"564baa93\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-75d4f6ba elementor-widget elementor-widget-menu-anchor\" data-id=\"75d4f6ba\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"equipment\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7dece25a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7dece25a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4d757c69\" data-id=\"4d757c69\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f4a452f elementor-widget elementor-widget-text-editor\" data-id=\"f4a452f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"equipment_setup\"><\/span>equipment setup<span class=\"ez-toc-section-end\"><\/span><\/h3><ul><li>use a linear, mid frequency range probe (5-8mhz). be prepared to change probes (or frequency output of probes) to adequately assess deeper or tortuous structures.<\/li><li>use of a 3-6mhz curvilinear probe is useful for distal ica in patients with high bifurcations, very thick necks and vertebral areties in arthritic necks.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7951a9ee elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7951a9ee\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3bd60976\" data-id=\"3bd60976\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-82d9d76 elementor-widget elementor-widget-menu-anchor\" data-id=\"82d9d76\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"pathology\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-29b62f12 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"29b62f12\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-607ec352\" data-id=\"607ec352\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-61e277a7 elementor-widget elementor-widget-text-editor\" data-id=\"61e277a7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"common_pathology\"><\/span>common pathology<span class=\"ez-toc-section-end\"><\/span><\/h3><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-52c9c5d9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"52c9c5d9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2d02168b\" data-id=\"2d02168b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3f7bd3c2 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3f7bd3c2\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7723002d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7723002d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-63a38e31\" data-id=\"63a38e31\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-15d8678 elementor-widget elementor-widget-menu-anchor\" data-id=\"15d8678\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"technique\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-599fa1f3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"599fa1f3\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2d2e75d8\" data-id=\"2d2e75d8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-613c8d77 elementor-widget elementor-widget-text-editor\" data-id=\"613c8d77\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h1 style=\"text-align: center;\">scanning technique<\/h1>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-23231a3a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"23231a3a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-434bc259\" data-id=\"434bc259\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4ae80d36 elementor-widget elementor-widget-text-editor\" data-id=\"4ae80d36\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li>explain the examination to patient, and obtain adequate and relevant history.<\/li><li>patient positioned supine on the bed, with head slightly extended over pillow.<\/li><li>scan with patient&#8217;s head turned slightly away from the side being examined.<\/li><li>begin the examination by assessing vessels in b-mode, optimising factors such as frequency, depth, gain, tgc and focal zone.<\/li><\/ul><p>angle:<\/p><ul><li>always angle correct to the flow not the vessel wall. they arent always the same and it may not be in the centre of the vessel.<\/li><li>less\u00a0than 60 degrees ( beyond 60degrees, error is exponentially increased)<\/li><li>ideally an angle of 0 degrees provides least error and greatest doppler shift. this is rarely acheivable but as we approach 0 degrees, our human inter-observer error error is diminishing.<\/li><li>with modern equipment, accurate angle correction is acheivable.<\/li><\/ul><p><strong>cca<\/strong><\/p><ul><li>begin proximally in transverse and follow distally to the bifurcation.<\/li><li>assess the course (i.e. if tortuous) and the presence of any intimal thickening or plaque.<\/li><li>repeat in longitudinal plane.<\/li><li>use colour to assess patency of vessel and the direction of flow.<\/li><li>use &#8216;heel\/toe&#8217; technique to optimize insonation of vessel, apply colour box and doppler sample gate with appropriate steering and angle correction.<\/li><li>measure the peak systolic (psv) and end diastolic velocities (edv).<\/li><\/ul><p>\u00a0<\/p><p><strong>bifurcation<\/strong><\/p><ul><li>assess in transverse and longitudinal for pathology.<\/li><li>identify the origins of the ica and eca arteries. the eca has small branches (usually the thyroglossal artery). the eca also usually has a smaller diameter, arises laterally and has a higher resistance waveform (ie lower diastolic flow than a normal ica).<\/li><li>&#8216;temporal tapping&#8217; may also be used to confirm that you are examining the eca. this involves gently tapping the temporal artery (approximately 1-2cm anterior to the top of the ear) whilst sampling the eca with doppler. you will see reverberations in the trace corresponding to your tapping.<\/li><li>a normal ica will have no branches and usually a lower resistance waveform.<\/li><li>measure the peak systolic (psv) and end diastolic velocities (edv) of the eca.<\/li><\/ul><p>be aware of the possibility of a &#8216;carotid bulb tumour&#8217; which whilst relatively rare, is a clinically significant finding. this will occur at the bifurcation, outside the vessels, possibly exerting extrinsic compression on the carotid artery.<\/p><p>\u00a0<\/p><p><strong>internal carotid artery (ica)<\/strong><\/p><ul><li>follow the vessel intially in b-mode and then using colour doppler. look for stenoses highlighted by aliasing in the colour doppler.<\/li><li>take doppler samples in the proximal and distal segments and anywhere else that pathology or an altered waveform is detected.<\/li><li>ensure you angle correctly to the direction of the flow indicated by the colour doppler prior to calculating velocity. importantly, this angle may not correspond to the course of the vessel.<\/li><\/ul><p>\u00a0<\/p><p><strong>vertebral arteries<\/strong><\/p><ul><li>return to a\u00a0longitudinal\u00a0plane of the cca and angle the beam postero-laterally to visualise the vertebral artery.<\/li><li>ensure suitable prf and gain for these smaller, deeper vessels. the flow should be low resistance flow ( presence of forward diastolic flow).<\/li><li>confirm the flow is antegrade i.e. towards the head &#8211; (normal) or retrograde (suggesting subclavian steal syndrome).<\/li><\/ul><p>\u00a0<\/p><p><strong>subclavian arteries<\/strong><\/p><ul><li>if there is the suggestion of retrograde vertebral artery flow, examine the subclavian artery for a tight stenosis or occlusion that could result in subclavian steal syndrome.<\/li><li>the pathology will usually be located between the cca origin and vertebral origin.<\/li><li>similarly, if there is low systolic, high diastolic flow in the common carotid artery this may be related to cca origin or subclavian pathology.<\/li><\/ul><p>\u00a0<\/p><p><strong>adjacent structures<\/strong><\/p><p>always keep in mind the surrounding anatomy in the neck that may be of clinical significance. for example enlarged lymph nodes or thyroid pathology. brief documentation may be made and formal follow up studies can be performed if clinically indicated.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1a26ebcc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1a26ebcc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7f02909a\" data-id=\"7f02909a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7707228b elementor-widget elementor-widget-menu-anchor\" data-id=\"7707228b\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"imaging\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-679c6835 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"679c6835\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e4cd5c9\" data-id=\"e4cd5c9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-45bcc459 elementor-widget elementor-widget-text-editor\" data-id=\"45bcc459\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"basic_hardcopy_imaging\"><\/span>basic hardcopy imaging<span class=\"ez-toc-section-end\"><\/span><\/h3><p>a carotid ultrasound series should include the following images;<\/p><ul><li>common carotid artery in b mode &#8211; long, trans<\/li><li>common carotid artery with colour &amp; spectral doppler<\/li><li>external carotid artery origin b mode<\/li><li>external carotid artery origin with colour &amp; spectral doppler<\/li><li>internal carotid artery origin b mode<\/li><li>internal carotid artery origin with colour &amp; spectral doppler<\/li><li>vertebral artery spectral doppler showing patency and flow direction<\/li><li>document:<ul><li>the normal anatomy.<\/li><li>any plaque found (in 2 planes).<\/li><li>all peak systolic and end diastolic velocities<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>ultrasound of normal common carotid artery (cca). note the smooth echogenic intimal surface. ultrasound of normal carotid bifurcation. common carotid artery (cca). internal carotid artery (ica). external carotid artery (eca) the cca is readily visible. locate it in transverse and rotate into longitudinal. ultrasound of the cca will have a doppler trace that is representative [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"tags":[],"class_list":["post-276","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/pages\/276"}],"collection":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/comments?post=276"}],"version-history":[{"count":0,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/pages\/276\/revisions"}],"wp:attachment":[{"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/media?parent=276"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.iolishoes.com\/wp-json\/wp\/v2\/tags?post=276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}