Related Experiment Video
Updated: Aug 21, 2026

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
Published on: February 21, 2025
Baseline heart rate-adjusted electrocardiographic triggering for coronary artery electron-beam CT angiography
Bin Lu1, Nan Zhuang, Song-Shou Mao
1Department of Radiology, Cardiovascular Institute and FuWai Hospital, Peking Union Medical College, and Chinese Academy of Medical Sciences, 167 Bei-Li-Shi St, Beijing 100037, China. blu@vip.sina.com
Abstract:
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 motion-free 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 (> or =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.
Related Concept Videos
Imaging Studies for Cardiovascular System V: CT
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Cardiac Catheterization I: Pre-Procedure Overview
