Clinical Application of Double Energy Tri-Low Scanning in Coronary Angiography
WANG Dong1, CHANG Yingjuan1, LI Jian1, CAO Lina2, SHI Mingguo1
1.Department of Radiology, Xijing Hospital, The Fourth Military Medical University, Xi’an Shaanxi 710032, China; 2.Department of
Radiology, Affiliated Hospital of Shaanxi University of Traditional Chinese Medicine, Xianyang Shaanxi 712000, China
Abstract：Objective To discuss the application of the dual-energy low contrast dose, low-contrast dose injection and low radiation
dose (tri-low) scanning of FLASH dual-source in the application of coronary artery imaging. Methods Sixty patients with suspected
coronary heart disease were randomly divided into two groups, with 30 patients in each group. Dual energy scanning (group A) and
routine retrospective scanning (group B) were separately performed on these patients respectively. Image quality, radiation dose and final diagnosis of the two groups were compared. Results The volume CT dose index (CTDIvol) of group A, the product of dose
length, the effective radiation dose were significantly lower than group B (P<0.05). The right coronary artery proximal, the anterior
descending branch of the left coronary artery, and the proximal and ascending aortic root strengthening value in group A were much
lower than that of group B (P<0.05). There was no significant difference in the SNR and the contrast noise between the two groups of
images. Conclusion Dual energy scanning (low dose, low contrast medium, low injection rate) can obtain better image in coronary
CTA imaging. Reduction of contrast dose can reduce the occurrence of contrast-induced nephropathy. Besides, the low injection
velocity is also related to low subcutaneous leakage. Therefore, the dual-energy CT can be widely used in elderly and diabetic patients.
王栋1，常英娟1，李剑1，曹丽娜2，石明国1. 双能量三低扫描在冠状动脉成像中的临床应用研究[J]. 中国医疗设备, 2017, 32(11): 1-4.
WANG Dong1, CHANG Yingjuan1, LI Jian1, CAO Lina2, SHI Mingguo1. Clinical Application of Double Energy Tri-Low Scanning in Coronary Angiography. China Medical Devices, 2017, 32(11): 1-4.
