Measuring carotid artery stenosis using CT angiography: the dilemma of artifactual lumen eccentricity

AJR. American Journal of Roentgenology
S W WiseT Schwartz

Abstract

This study assesses artifactual luminal distortion, or eccentricity, that affects measurement of stenosis on CT angiography performed with a variety of helical protocols. A 32-vessel carotid artery phantom was built with five known grades of stenoses (25%, 50%, 75%, 88%, and 94%) and three lengths of stenosis (1, 3, and 5 mm). This phantom was scanned with conventional and 1.0-, 1.5-, and 2.0-pitch helical CT with slice thicknesses of 2, 4, and 8 mm, and three vessel orientations: parallel, 45 degrees oblique, and perpendicular to the z-axis. Oblique multiplanar reconstruction was performed with the latter two vessel orientations to produce images similar to the parallel to z-axis orientation. The cross-sectional images were then used to measure the maximum and minimum (longest and shortest) luminal diameters in and out of each stenosis at a computer workstation by a single investigator who was unaware of the scanning technique. Percentage of stenosis was assessed by three methods: cross-sectional area in and out of the stenosis, maximum diameter out of stenosis and minimum in stenosis (North American Symptomatic Carotid Endarterectomy Trial method), and minimum diameter in and out of the stenosis. Comparisons were made with th...Continue Reading

Citations

Oct 20, 2001·AJR. American Journal of Roentgenology·K A AddisD T Mauger
Mar 16, 2002·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Marcela Hernández-HoyosIsabelle E Magnin
Sep 18, 2002·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Dianna D Cody
May 20, 2014·Journal of Atherosclerosis and Thrombosis·Florentino Luciano Caetano dos SantosHannu Eskola
Feb 26, 2005·Radiology·Yun-Hyeon KimH Page McAdams
Jun 5, 2004·Journal of Vascular and Interventional Radiology : JVIR·Laurent Létourneau-GuillonGuy Cloutier
Apr 1, 2004·Medical Journal, Armed Forces India·A Alam, B N Chander
Feb 1, 2008·Journal of the Neurological Sciences·Max WintermarkDavid Saloner
Mar 17, 2004·Magnetic Resonance Imaging Clinics of North America·Valerie Jewells, Mauricio Castillo
Nov 25, 2003·Neuroimaging Clinics of North America·Paul A CarusoBonnie L Padwa
Jun 11, 1999·Radiologic Clinics of North America·J M Provenzale, N J Beauchamp
Nov 4, 1998·Seminars in Ultrasound, CT, and MR·B S Kuszyk, E K Fishman
Nov 4, 1998·Seminars in Ultrasound, CT, and MR·B S KuszykE K Fishman
Oct 3, 2009·Stroke; a Journal of Cerebral Circulation·Richard E LatchawUNKNOWN American Heart Association Council on Cardiovascular Radiology and Intervention, Stroke Council, and the Interdisciplinary C
Jul 4, 2001·Topics in Magnetic Resonance Imaging : TMRI·J E Heiserman

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