Window Settings for the Study of Calcified Carotid Plaques with Multidetector CT Angiography

被引：45

作者：

Saba, L. ^{[1
]}

Mallarini, G. ^{[2
]}

机构：

[1] Policlin Univ, Dept Sci Images, I-09045 Cagliari, Italy

[2] Univ Cagliari, Inst Radiol, Cagliari, Italy

来源：

AMERICAN JOURNAL OF NEURORADIOLOGY | 2009年 / 30卷 / 07期

关键词：

COMPUTED-TOMOGRAPHY ANGIOGRAPHY; SPIRAL CT; ATHEROSCLEROTIC PLAQUE; ARTERY STENOSIS; ISCHEMIC SYMPTOMS; DISEASE; BIFURCATION; APPEARANCE; COMPONENTS; ACCURACY;

D O I：

10.3174/ajnr.A1509

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

CT angiography (CTA) shows high sensitivity in detecting calcified plaques, but sometimes a bias in the exact quantification of stenosis degree occurs, mainly caused by the high linear attenuation coefficient of the calcified plaques. The purpose of this technical study was to evaluate the most appropriate CT window parameters for the assessment of calcified plaques stating which of them can provide the best inter-observer agreement. Scatter-plots and regression results showed the correlation between both width and level respectively depending on intraluminal Hounsfield units (HU) value (width = intraluminal HU x 2.07; level = intraluminal HU x 0.72). Obtained data indicated that the presence of different stenosis degrees did not modify visualization parameters.

引用

页码：1445 / 1450

页数：6

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