适当低浓度对比剂在冠状动脉CTA成像中的应用价值

发布时间：2018-01-26 22:19

本文关键词： 冠状动脉成像体层摄影术对比剂浓度　出处：《临床放射学杂志》2015年03期 　论文类型：期刊论文

【摘要】：目的探讨适当低浓度对比剂在冠状动脉CTA成像中的应用价值。方法对136例拟行冠状动脉CTA检查的患者行前瞻性研究,按所用对比剂浓度不同分为三组,所用对比剂浓度分别为320 mg I/ml、350 mg I/ml、370 mg I/ml,将扫描所得原始数据进行后处理重组,然后对重组后的冠状动脉图像质量进行主观评价,并对主动脉起始部及同层面降部的CT值进行测量,对其结果分别进行统计学分析。结果三组冠状动脉图像质量的主观评价差异无统计学意义(χ2=0.785,P=0.675)。采用前瞻性心电门控扫描的三组患者主动脉起始部CT值的分析结果为:F值=0.992、P值=0.376;主动脉降部CT值的分析结果为:F值=1.527、P值=0.224,采用回顾性心电门控扫描的三组患者主动脉起始部CT值的分析结果为:F值=1.206、P值=0.307;主动脉降部CT值的分析结果为:F值=1.703、P值=0.191,各组CT值的差异无统计学意义。结论适当低浓度对比剂(320 mg I/ml)能够满足冠状动脉CTA的诊断要求,在行冠状动脉CTA检查时推荐使用。
[Abstract]:Objective to evaluate the value of appropriate low concentration contrast medium in coronary CTA imaging. Methods A prospective study was performed in 136 patients with coronary artery CTA. They were divided into three groups according to the concentration of contrast agent used. The concentration of contrast agent was 320 mg / ml 350mg / ml ~ 350mg / ml ~ 370mg / ml respectively. The original data were processed and recombined, then the image quality of the reconstructed coronary artery was evaluated subjectively, and the CT values of the origin of aorta and the descending part of the same plane were measured. Results there was no significant difference in the subjective evaluation of coronary image quality among the three groups (蠂 2 / 0.785). The CT value of aorta in the three groups with prospective ECG gated scan was 0.376. The results of CT analysis were as follows: 1 F value 0.992g P value 0.376A, P = 0.376.The results of CT analysis were as follows: 1% F value 0.992g P value 0.376; The analysis of CT value of descending part of aorta was: 1. 527% F value and 0. 224% P value of descending part of aorta. The CT value of aorta in the three groups with retrospective gated ECG scan was 1.206 P = 0.307. The CT value of descending part of aorta was 1.703 P = 0.191. Conclusion the appropriate low concentration contrast agent (320 mg I / ml) can meet the diagnostic requirements of coronary CTA. Recommended for coronary CTA.
【作者单位】：首都医科大学附属北京世纪坛医院放射科;
【分类号】：R541.4;R816.2
【正文快照】： 近年来,随着CT技术的进步,冠状动脉CTA成像取得了很大的进展,已经成为冠状动脉病变影像检查的首选方法。由于血管内CT值是影响冠状动脉CTA图像质量的重要因素之一,因此,对比剂的选择成为检查的关键。目前使用的对比剂以高浓度为主,但高浓度对比剂的副作用较多。本研究通过不同

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