Calcified plaque: Measurement of area at thin-section flat-panel CT and 64-section multidetector CT and comparison with histopathologic findings

被引：55

作者：

Sarwar, Ammar ^{[1
]}

Rieber, Johannes ^{[1
]}

Mooyaart, Eline A. Q. ^{[1
]}

Seneviratne, Sujith K. ^{[1
]}

Houser, Stuart L. ^{[1
]}

Bamberg, Fabian ^{[1
]}

Raffel, O. Christopher ^{[1
]}

Gupta, Rajiv ^{[1
]}

Kalra, Mannudeep K. ^{[1
]}

Pien, Homer ^{[1
]}

Lee, Hang ^{[1
]}

Brady, Thomas J. ^{[1
]}

Hoffmann, Udo ^{[1
]}

机构：

[1] Massachusetts Gen Hosp, Cardiac MR PET CT Program, Boston, MA 02114 USA

来源：

RADIOLOGY | 2008年 / 249卷 / 01期

关键词：

D O I：

10.1148/radiol.2483072003

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

The purpose of this study was to assess the blooming artifacts in ex vivo coronary arteries at multidetector computed tomography (CT) and flat-panel-volume CT by comparing measured areas of calcified plaque with respect to the reference standard of histopathologic findings. Three ex vivo hearts were scanned with multidetector CT and flat-panel-volume CT after institutional review board approval. The area of calcified plaque was measured at histopathologic examination, multidetector CT, and flat-panel volume CT. The plaque area was overestimated at multidetector CT by 400% (4.61/1.15) on average, and the predicted difference between the measurements was significant (3.46 mm(2), P = .018). The average overestimation of plaque area at flat-panel-volume CT was twofold (214% [2.18/1.02]), and the predicted difference was smaller (1.16 mm(2), P = .08). The extent of the blooming artifact in visualizing calcified coronary plaque is reduced by using flat-panel-volume CT. (c) RSNA, 2008.

引用

页码：301 / 306

页数：6

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