Duplex ultrasonography for the detection of vertebral artery stenosis
نویسندگان
چکیده
منابع مشابه
Duplex ultrasonography for the detection of vertebral artery stenosis
OBJECTIVES Vertebrobasilar stenosis is frequent in patients with posterior circulation stroke and it increases risk of recurrence. We investigated feasibility of duplex ultrasonography (DUS) for screening for extracranial vertebral artery stenosis and compared it with CT angiography (CTA). MATERIALS AND METHODS We gathered data on 337 consecutive patients who had DUS because of posterior circ...
متن کاملVertebral artery occlusion in duplex color-coded ultrasonography.
BACKGROUND AND PURPOSE To establish the diagnostic criteria for the site of occlusion in the vertebral arteries (VAs) using duplex color-coded ultrasonography. METHODS In 128 consecutive patients who underwent conventional cerebral angiography, we prospectively measured the diameter, mean flow velocity (MV), peak systolic flow velocity, and end-diastolic flow velocity of both VAs. The diamete...
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OBJECTIVES to establish on a national basis whether the diagnostic accuracy of carotid duplex justifies carotid surgery without preoperative angiography. DESIGN prospective national multicentre study with 10 participating university and county hospitals. MATERIAL AND METHODS one hundred and thirty-four patients, aged 69+/-9 years, were subjected to routine carotid duplex ultrasonography and...
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BACKGROUND Detection of renal artery stenoses (RAS) by means of duplex Doppler ultrasound with direct scanning of the main renal arteries is subject to numerous limitations. Using semiquantitative analysis of the Doppler curve, which can be recorded from intrarenal arteries, it is possible to detect RAS unaffected by the problems of direct Doppler scanning of the renal arteries. METHODS Both ...
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The introduction of color-coded duplex ultrasonography has improved the ease of performing ultrasound investigations of the vertebral arteries. So far, normal values of flow velocities have been reported only for the intertransverse region of the vertebral artery (V2 segments). Atherosclerotic disease at the origin of the vertebral arteries (V0 segment) is frequent and is one of the risk factor...
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ژورنال
عنوان ژورنال: Brain and Behavior
سال: 2017
ISSN: 2162-3279
DOI: 10.1002/brb3.750