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
Effects of different contrast injection schemes on the image quality of triple-rule-out CT angiography
卢星如 1孟存忠 2郑生喜 3何勤义 4罗天扬 5黄宏亮 1刘欣然 6龚恒鑫 6张晓易 6雷军强1
作者信息
- 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
- 2. 武威市人民医院放射科,甘肃 武威 733000
- 3. 张掖市第二人民医院放射科,甘肃 张掖 734000
- 4. 天水407医院放射科,甘肃 天水 741000
- 5. 白银市第一人民医院放射科,甘肃 白银 730900
- 6. 兰州大学第一临床医学院,甘肃 兰州 730000
- 折叠
摘要
目的 探讨不同对比剂注射方案对胸痛三联征CT血管成像(TRO-CTA)图像质量的影响.方法 前瞻性选取多中心以急性胸痛就诊并行TRO-CTA检查患者691例,根据不同对比剂注射方法随机分为混合组和未混合组.对2组主动脉、肺动脉及冠状动脉图像质量进行主观和客观评价并统计辐射剂量.结果 2组间图像质量主观评分,主动脉、冠状动脉CT值、信噪比(SNR)及对比噪声比(CNR)差异无统计学意义(P>0.05),肺动脉CT值、SNR、CNR以及辐射剂量有显著差异(P<0.05).结论 TRO-CTA检查中采用混合对比剂注射方案减少了对比剂用量及辐射剂量,并能获得优质的图像质量,具有临床应用价值.
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.
关键词
对比剂/胸痛/胸痛三联征CT血管成像Key words
contrast agent/chest pain/triple-rule-out computed tomography angiography引用本文复制引用
出版年
2025
NETL
NSTL
万方数据