Effects of different contrast injection schemes on the image quality of triple-rule-out CT angiography
10.3969/j.issn.1002-1671.2025.01.028
- VernacularTitle:不同对比剂注射方案对胸痛三联征CT血管成像图像质量的影响
- Author:
Xingru LU
1
;
Cunzhong MENG
;
Shengxi ZHENG
;
Qinyi HE
;
Tianyang LUO
;
Hongliang HUANG
;
Xinran LIU
;
Hengxin GONG
;
Xiaoyi ZHANG
;
Junqiang LEI
Author Information
1. 兰州大学第一医院放射科 甘肃省放射影像临床医学研究中心,甘肃 兰州 730000
- Publication Type:Journal Article
- Keywords:
contrast agent;
chest pain;
triple-rule-out computed tomography angiography
- From:
Journal of Practical Radiology
2025;41(1):124-128
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of different contrast injection schemes on the image quality of triple-rule-out com-puted tomography angiography(TRO-CTA).Methods A total of 691 patients with acute chest pain who underwent TRO-CTA exami-nation from multiple centers were prospectively selected and randomly divided into mixed group and unmixed group according to dif-ferent contrast injection methods.The image quality of aorta,pulmonary artery and coronary artery in the two groups was evaluated subjectively and objectively and the radiation dose was calculated.Results There were no significant differences in subjective image quality scores,aorta and coronary CT values,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)between the two groups(P>0.05),while there were significant differences in pulmo-nary CT values,SNR,CNR and radiation dose between the two groups(P<0.05).Conclusion The utilization of a mixed contrast injection scheme in TRO-CTA can satisfy diagnostic require-ments while ensuring a low proportional dosage and reduced radiation dose,which has clinical application value.
