Baseline heart rate-adjusted electrocardiographic triggering for coronary artery electron-beam CT angiography

被引：4
|
作者：
Lu, B
Zhuang, N
Mao, SS
Child, J
Carson, S
Budoff, MJ
机构：
[1] Peking Union Med Coll, Dept Radiol, Cardiovasc Inst, Beijing 100037, Peoples R China
[2] Peking Union Med Coll, FuWaiu Hosp, Beijing 100037, Peoples R China
[3] Chinese Acad Med Sci, Beijing 100037, Peoples R China
[4] Univ Calif Los Angeles, Harbor Med Ctr, Dept Med, Div Cardiol, Torrance, CA 90509 USA
[5] St Johns Cardiovasc Res Ctr, Torrance, CA 90509 USA
来源：
RADIOLOGY | 2004年 / 233卷 / 02期
关键词：
computed tomography (CT); angiography; electron beam; image quality; coronary vessels; stenosis or obstruction;
D O I：
10.1148/radiol.2332030953
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：
Conventional electrocardiographic (ECG) triggering (group 1, 53 patients) was compared with baseline heart rate-adjusted ECG triggering (group 2, 54 patients) for coronary artery electron-beam computed tomographic (CT) angiography. CT angiographic data sets were compared blindly with conventional angiograms according to segment. Nonassessability of coronary artery segments was reduced from 35% in group 1 to 13% in group 2 (P <.001). More motionfree coronary artery images were obtained in group 2 than in group 1, especially in the right coronary artery (95% vs 67%, P <.001). Overall sensitivity and specificity for luminal stenosis ( greater than or equal to 50%) were 69% and 82% (group 1) and 76% and 92% (group 2) (P >.05 and P <.001, respectively). Baseline heart rate-adjusted ECG triggering improves image quality at coronary artery CT angiography for detection of coronary artery disease. (C) RSNA, 2004.
引用
收藏
页码：590 / 595
页数：6
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