64-slice spiral CT coronary angiography with prospective electrocardiogram-gating:an initial study
- VernacularTitle:前瞻性心电门控在64层CT冠状动脉成像的初步应用
- Author:
Xuchun YUAN
;
Xianzhu WANG
;
Wenling LIAO
;
Qin CHEN
;
Huiyi DENG
- Publication Type:Journal Article
- Keywords:
Tomography,X-ray computed;
Coronary angiography;
Image processing,computer-assisted
- From:
Chinese Journal of Radiology
2008;42(10):1053-1055
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the feasibility of prospective electrocardiogram(ECG)-gating computed tomography coronary angiography(CTCA).Methods Sixty patients with suspected or known coronary artery disease underwent 64-slice CTCA using prospective ECG-gating.Multi-planar reconstruction (MPR),curved-planar reconstruction(CPR),maximum intensity projection(MIP)and volume rendering (VR)were used to demonstrate the coronary arteries.The image quality and radiation dose was evaluated.Results The mean effective radiation dose was(2.7±0.2)mSv.93.3%(720/772)segments of all coronary arteries were of diagnostic image quality,44.2%(341/772)Was classified as excellent and 49.1%(379/772)was good.Non-diagnostic coronary segments were found in 6.7%(52/772)of all coronary arteries.Therewere 5(8.3%)cases with severe coronary stenosis(＞75%)or occlusion,17(28.4%)cases with moderate stenosis(50%-75%),18(30.0%)cases with mild stenosis(＜50%)or irregular lumen,20(33.3%)cases with normal coronary artery.Conclusion With a low radiation dose,prospective electrocardiogram(ECG)-gated coronary 64-MSCT angiography has a good potential for the detection of coronary stenosis,especially for excluding coronary artery disease.
