[et_pb_section fb_built=”1″ _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_audio title=”When you suspect a carotid artery stenosis, duplex ultrasound is a good screening tool. The sensitivity for carotid artery stenosis is 89% and the specificity is 84%. ” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_audio][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_image src=”https://https://https://https://https://https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-1-1.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured.png-preprod2.kwantic.dev/wp-content/uploads/2024/03/Table-3.png” title_text=”Table 3″ url=”https://www.ejves.com/article/S1078-5884(22)00237-4/fulltext#secsectitle0115″ _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_image][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_audio title=”There are two options in calculating the degree of stenosis of the internal carotid artery: according to the NASCET and to the ECST criteria, where the NASCET is the most widely used one. NASCET compares the diameter of the distal healthy internal carotid artery to the smallest lumen diameter, while the ECST compares the smallest lumen diameter to the diameter of the internal carotid artery in the same place. The ESVS guidelines adhere to the NASCET criteria because of greater reliability, however when there is a voluminous plaque in the carotid bulb, this method might not be accurate and it might be preferred to use the ECST criteria in this case. ” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_audio][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_image src=”https://https://https://https://https://https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-1-1.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured.png-preprod2.kwantic.dev/wp-content/uploads/2024/03/Figure-1.png” title_text=”Figure 1″ _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_image][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_audio title=”When measuring carotid artery stenosis, the degree of stenosis is not only based on the diameters. The benefit of duplex ultrasound is that blood flow velocities can be measured, in addition to the two dimensional image. The absolute peak systolic velocity in the internal carotid artery, and the peak systolic velocity ratio of the internal and common carotid arteries are used. The 2018 guidelines propose a table that can be used as reference for these velocities, but it is important that every vascular laboratory validates their own cut off points.” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_audio][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_image src=”https://https://https://https://https://https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-1-1.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured.png-preprod2.kwantic.dev/wp-content/uploads/2024/03/Correct-Table-1-Chapter-2.png” title_text=”Correct Table 1 Chapter 2″ url=”https://https://https://https://https://https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-1-1.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured.png-preprod2.kwantic.dev/wp-content/uploads/2021/08/Atherosclerotic-Carotid-and-Vertebral-Artery-2017-1.pdf” url_new_window=”on” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_image][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_audio title=”An example of duplex ultrasound of the carotid artery can be seen in the video below.” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_audio][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_code _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_code][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_audio title=”For more detailed information on duplex ultrasound on the carotid artery, the full video of the carotid duplex can be seen in the link below. ” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_audio][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_button button_url=”https://https://https://https://https://https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://https://https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-preprod2.kwantic.dev/wp-content/uploads/2017/04/news-https://https://https://esvs.org/wp-content/uploads/2025/08/masterclass-3-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-2.png-1-2.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3-1.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18-2.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured-1.png-1-1.jpg-preprod2.kwantic.dev/wp-content/uploads/2025/08/masterclass-3.png-preprod2.kwantic.dev/wp-content/uploads/2025/09/Mask-group-18.png-preprod2.kwantic.dev/wp-content/uploads/2025/08/featured.png-preprod2.kwantic.dev/blog/video/carotid-duplex/” url_new_window=”on” button_text=”Watch the full video” button_alignment=”center” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_button][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_audio title=”It should be kept in mind that duplex ultrasound is operator dependent. In addition, when the plaque is very voluminous or heavily calcified, the duplex ultrasound might become less reliable. It is therefore advised to obtain a second modality before performing an intervention. This will be further discussed in the next chapter.The duplex ultrasound of our patient showed a significant stenosis of the proximal internal carotid artery of >70%. ” _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_audio][et_pb_divider _builder_version=”4.23.4″ _module_preset=”default” global_colors_info=”{}”][/et_pb_divider][et_pb_blurb _builder_version=”4.27.0″ _module_preset=”default” title=”Click to view all 3 images” hover_enabled=”0″ sticky_enabled=”0″][/et_pb_blurb][et_pb_gallery _builder_version=”4.27.0″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” gallery_ids=”308470,308471,308472″ sticky_enabled=”0″ fullwidth=”on”][/et_pb_gallery][/et_pb_column][/et_pb_row][/et_pb_section]
