经验法与预注射试验法扫描启动时间在冠状动脉CTA的应用比较

发布时间：2018-02-22 23:55

本文关键词： 冠状动脉对比剂启动时间体层摄影术 X线计算机　出处：《临床放射学杂志》2015年02期 　论文类型：期刊论文

【摘要】：目的探讨经验法与预注射试验法两种扫描启动时间对64层螺旋CT冠状动脉CTA成像的影响和临床检查效果。方法共232例可疑或诊断冠心病者进行冠状动脉CTA检查,分别采用经验法(168例)与预注射试验法(64例)确定扫描启动时间;采用相同对比剂注射方案(370 mg I/ml×4 ml/s×60 ml)进行冠状动脉CTA检查;对两组的血管强化程度和不同强化程度者分布情况进行比较。结果经验法与预注射试验法确定扫描启动时间,所得的血管平均强化水平相近,不同强化程度者分布情况相似,两组间的差异无统计学意义。结论经验法扫描启动时间能够满足64层螺旋CT冠状动脉CTA强化水平,节省对比剂用量,减轻患者碘负荷带来的负面影响,尤其对于心功能较好的筛查病例更具有积极意义。
[Abstract]:Objective to investigate the effect of two kinds of scanning start-up time on CTA imaging of coronary artery with 64-slice spiral CT. Methods Coronary artery CTA was performed in 232 patients with suspected or diagnosed coronary artery disease. The starting time of scanning was determined by experience method (168 cases) and pre-injection test (64 cases), and the coronary artery CTA was examined by the same contrast medium injection regimen (370mg / ml 脳 4 ml/s 脳 60ml). Results the starting time of scanning was determined by empirical method and pre-injection test. The average enhancement level of the two groups was similar, and the distribution of different enhancement degree was similar. There was no significant difference between the two groups. Conclusion the start-up time of empirical scanning can meet the enhancement level of 64-slice spiral CT coronary artery CTA, save the dosage of contrast agent, and alleviate the negative effects of iodine load on patients. Especially for the screening cases with better cardiac function has more positive significance.
【作者单位】：广东省人民医院(广东省医学科学院)放射科;
【基金】：广东省科技支撑计划项目(编号:2011B061300018) 广东省医学科研基金项目(编号:B2011015)
【分类号】：R816.2

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