Duplex Doppler sonography of the carotid artery: false-positive results in an artery contralateral to an artery with marked stenosis

AJR. American Journal of Roentgenology
W W BeckettJ C Hoffman

Abstract

Anecdotal reports have described a false-positive "jet effect" or velocity increase in the carotid artery contralateral to an artery with significant stenosis or occlusion when using duplex Doppler sonography. In this study, the frequency, significance, and possible reasons for this finding were evaluated by a retrospective comparison of duplex sonography and angiography. Twenty-three patients with unilateral 81-100% carotid artery stenosis who underwent both duplex sonography (16 Acuson, seven Quantum) and angiography were evaluated. In 14 patients, there was an accurate or slight underestimate (less than 20%) of stenosis present in the internal carotid artery contralateral to an artery with tight stenosis/occlusion. In nine, a velocity increase in the internal carotid artery resulted in overestimation (10-80%) of the actual degree of stenosis. In one of these nine patients, real-time images were sufficient to explain the velocity increase on the basis of vessel tortuosity. In one, falsely elevated velocity resulted from inaccurate assignment of the Doppler angle of incidence in a patient in whom real-time visualization of a distal internal carotid lesion was poor. In four of the nine patients, cross filling via the circle of ...Continue Reading

Citations

Apr 1, 1995·Cardiovascular Surgery : Official Journal of the International Society for Cardiovascular Surgery·I E RodrigusR G Vanmaele
Aug 1, 1996·American Journal of Surgery·S J BusuttilJ R Elmore
Sep 21, 2000·European Journal of Ultrasound : Official Journal of the European Federation of Societies for Ultrasound in Medicine and Biology·M BelskyM Daitzchman
Jan 11, 2000·AJR. American Journal of Roentgenology·M M HorrowH K Rosenberg
Dec 2, 2011·Medical Ultrasonography·Sorin Crişan
Aug 2, 2006·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Marie Gerhard-HermanUNKNOWN Society of Vascular Medicine and Biology
Sep 27, 2014·The Journal of Surgical Research·Joshua E PreissLuke P Brewster
Apr 20, 2004·Journal of the American College of Cardiology·Ravish SacharChristopher T Bajzer
Jan 1, 1996·Acta Radiologica·M J PäivänsaloI J Suramo
Aug 20, 2003·Neurologia Medico-chirurgica·Yasuhiro SuzukiTakumi Abe
Apr 17, 2002·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Marco A LimaJesus Uson

❮ Previous
Next ❯

Related Concepts

Related Feeds

Carotid Artery Diseases

Carotid artery disease is a group of pathological conditions of the carotid artery. Discover the latest research on carotid artery disease here.