64排VCT-XT冠脉低剂量扫描技术在老年冠心病患者中的应用价值  

Clinical application of low-radiation dosage coronary angiography in elderly patients with coronary heart disease by 64-slice spiral CT

作　　者：李学文[1] 赵季红[1] 姜铁民[1] 顾欣[2] 宗洁[2] 李竞[2] 韩学利[2] 师博[2] 史德龙 崔兰柱[2] 

机构地区：[1]中国人民武装警察后勤学院附属医院心内科,天津市300162 [2]中国人民武装警察后勤学院附属医院放射科,天津市300162

出　　处：《实用老年医学》2013年第6期483-485,共3页Practical Geriatrics

摘　　要：目的评价64排螺旋CT低剂量冠状动脉成像在老年冠心病患者中的应用价值。方法 2010年12月至2012年1月80例疑诊冠心病老年患者随机分为2组,常规剂量组(A组)和低剂量组(B组),每组40例,分别进行CT冠脉成像检查,对2组的图像进行质量评分,对有效辐射剂量进行统计学分析。结果低剂量组与常规剂量组图像质量评分差异无统计学意义,同时降低了90%以上的有效辐射剂量,2组辐射剂量有统计学差异(P<0.01)。结论在老年人心率允许的前提下,64排VCT-XT采用前门控扫描技术,能够在大幅降低有效辐射剂量的同时获得满足临床需要的图像质量。Objective To study the clinical application of low-radiation dosage coronary artery angiography with 64-slice spiral CT in detecting coronary heart disease. Methods Eighty elderly cases of clinically suspected coronary heart disease were randomly divided into two groups with 40 patients in each group. The patients in group A received retrospective ECG-gated scanning mode with routine dose, and the patients in group B received prospective ECG-gated scanning mode with a low dose. The image quality was evaluated and the effective radiation dose was analyzed. Results There was no significant difference in the image quality betwee group A and group B. The effective radiation dose in group B was signficantly decreased. Conclusions the 64-slice VCT-XT can significantly reduce radiation dose at least 90%,and the image quality is satisfactory.

关 键 词：冠状动脉成像 低剂量 冠心病 老年人 

分 类 号：R541.4[医药卫生—心血管疾病]