分子影像学杂志2025，Vol.48Issue(6)：731-735,5.DOI:10.12122/j.issn.1674-4500.2025.06.11
不同碘浓度对比剂对冠状动脉CT血管成像图像质量及辐射剂量的影响
Effects of contrast media with different iodine concentrations on image quality and radiation dose of coronary CT angiography
摘要
Abstract
Objective To analyze the effects of contrast media with different iodine concentrations on image quality and radiation dose of coronary computed tomography angiography(CCTA).Methods The data of 144 patients with coronary heart disease who were admitted to the Sichuan Science City Hospital from January 2020 to January 2024 were retrospectively analyzed.All patients underwent dual-source CCTA after admission,and the fixed iodine flow rate was controlled within the same weight range.The patients were divided into group A(n=48),group B(n=48)and group C(n=48)according to different iodine concentrations in contrast media.The iodine concentrations of contrast media used in group A,B and C were 270 mgI/mL,320 mgI/mL,350 mgI/mL,respectively.The subjective image quality,CT values of the aortic root,right coronary artery and proximal left anterior descending artery,image noise,signal-to-noise ratios(SNRs)and radiation doses under contrast media with different iodine concentrations were compared.Results There were no statistically significant differences among the three groups in terms of the distribution of excellent,good and moderate quality of subjective coronary artery display,CT values of the aortic root,right coronary artery and left anterior descending artery,SD value,SNR,CTDI,DLP,ED(P>0.05).Conclusion Under a fixed iodine flow rate,there is no significant difference in image quality and radiation dose of CCTA using contrast media with different iodine concentrations(270,320,350 mgI/mL).For patients without obesity or severe renal dysfunction prioritize,contrast media with low iodine concentration is recommended to reduce the risk of nephrotoxicity.关键词
冠状动脉/双源CT/碘对比剂/浓度/图像质量Key words
coronary artery/dual-source CT/iodinated contrast agent/concentration/image quality引用本文复制引用
王静静,姚倩东,刘锟,张筱筠..不同碘浓度对比剂对冠状动脉CT血管成像图像质量及辐射剂量的影响[J].分子影像学杂志,2025,48(6):731-735,5.基金项目
绵阳市卫生和计划生育委员会科研课题(201726) （201726）
