Abstract：Objective To explore the 320-row CT coronary subtraction technique and analyze the factors affecting the image quality during the scanning process of patients with coronary artery calci?cation and stenosis. Methods From January to August 2019, 586 patients who underwent coronary artery CTA examination in our hospital were analyzed retrospectively, and performed with coronary artery subtraction. Two imaging physician with rich diagnostic experience subjectively scored the image quality of subtraction from 1 (the worst effect) to 6 (the best effect), and recorded the patient’s basic characteristics, heart rate, cardiac anatomy and other parameters. Spearman rank correlation was used to analyze the correlation between each factor and the coronary artery subtraction image quality score, and the correlated factors were analyzed by binary Logistics regression. Results Binary logistics regression indicated that the in?uencing factors of both two group were the same. Among those, BMI (OR1=0.76, 95%CI: 0.61-0.95| OR2=0.71, 95%CI: 0.57-0.89) was independent protective factor of coronary artery subtraction, and average heart rate (OR1=1.14, 95%CI: 1.05-1.24| OR2=1.22, 95%CI: 1.13-1.32) and double phase heart rate difference (OR1=1.54, 95%CI: 1.11-2.12| OR2=1.43, 95%CI: 1.18-1.73) were independent risk factors. Conclusion For all patients, the lower average heart heart rate, the smaller difference between two scan phase and greater BMI were bene?cial to obtain high-quality coronary artery subtraction. These results will be helpful for the clinical application of coronary artery subtraction technology.
黄超，万维佳，姚宇环，夏黎明，黄文华. 320排容积CT冠状动脉减影技术在临床应用中的影响因素分析[J]. 中国医疗设备, 2020, 35(10): 126-130.
HUANG Chao, WAN Weijia, YAO Yuhuan, XIA Liming, HUANG Wenhua. The Influencing Factors Analysis for the Application of Coronary
Subtraction Technology in 320-Row CT. China Medical Devices, 2020, 35(10): 126-130.
