Diagnostic accuracy of dual-source CT coronary angiography with prospective ECG-triggering on different heart rate patients
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Ming-li Sun & Bin Lu & Run-ze Wu & Laura Johnson & Lei Han & Gang Liu & Fang-Fang Yu & Zhi-hui Hou & Yang Gao & Hong-yu Wang & Shiliang Jiang & Yue-ji
- چاپ و سال / کشور: 2011
Description
Objective To evaluate the diagnostic accuracy of dualsource CT (DSCT) prospective ECG-triggering coronary angiography in patients with different heart rate (HR). Methods 103 patients with suspected coronary artery disease underwent DSCT prospective ECG-triggered coronary angiography and invasive coronary angiography (ICA). The patients were grouped by HR during CT scans: low HR (≤60 bpm, n=34); medium HR (60<HR≤ 70 bpm, n=36) and high HR (>70 bpm, n=33). The sensitivity and specificity of DSCT in detecting ≥50% stenosis were compared among subgroups where ICA was the gold standard. Image quality was scored using a 4- point scale. Results A total of 1,580 (95.9%) coronary artery segments were evaluable. Sensitivity and specificity were 82.8% and 98.4%, 88.3% and 98.7%, and 80.3% and 98.6% for different subgroups (all p>0.05). The overall area under the curve of the receiver-operating characteristic analysis was 0.94. The image quality scores were 3.1±0.3, 3.1±0.3 and 3.0±0.4 for subgroups (p>0.05). The overall average effective radiation dose was 3.60±1.60 mSv. Conclusion DSCT coronary angiography with prospective ECG-triggering could be just as accurate in patients with medium to high HR compared to those with low HR.
Eur Radiol (2011) 21:1635–1642 DOI 10.1007/s00330-011-2107-5 Received: 27 August 2010 / Revised: 12 November 2010 / Accepted: 13 December 2010 / Published online: 12 April 2011
