Influence of heart rate on diagnostic accuracy and image quality of 16-slice CT coronary angiography: Comparison of multisegment and halfscan reconstruction approaches

被引：33

作者：

Marc Dewey ^{[1
]}

Florian Teige ^{[1
]}

Michael Laule ^{[2
]}

Bernd Hamm ^{[1
]}

机构：

[1] Department of Radiology, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, 10117 Berlin

[2] Department of Cardiology, Charité, Berlin

来源：

European Radiology | 2007年 / 17卷 / 11期

关键词：

Cardiac; Computed tomography; Coronary vessels; Segmentation; Sensitivity;

D O I：

10.1007/s00330-007-0685-z

中图分类号：

学科分类号：

摘要：

The lower the heart rate the better image quality in multislice computed tomography (MSCT) coronary angiography. We prospectively assessed the influence of heart rate on per-patient diagnostic accuracy and image quality of MSCT coronary angiography and compared adaptive multisegment and standard halfscan reconstruction. A consecutive cohort of 126 patients scheduled to undergo conventional coronary angiography was examined with 16-slice CT. For all heart rate groups, per-patient diagnostic accuracy was significantly higher for multisegment than halfscan reconstruction with values of 95 vs. 79% (p<0.05, <65 bpm, 38 patients), 85 vs. 66% (p<0.05, 65-74 bpm, 47 patients), and 78% vs. 41% (p<0.001, >74 bpm, 41 patients). Differences in diagnostic accuracy between adjacent heart rate groups were only significant for halfscan reconstruction for the comparison between the 65-74 and >74 bpm group (p<0.05). The vessel lengths free of motion artifacts were significantly longer with multisegment reconstruction in all heart rate groups and for all coronary arteries (p<0.005). For noninvasive MSCT coronary angiography, both per-patient diagnostic accuracy and image quality decline with increasing heart rate, and multisegment reconstruction at high heart rates yields similar results as standard halfscan reconstruction at low heart rates. © Springer-Verlag 2007.

引用

页码：2829 / 2837

页数：8

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