双源CT低剂量适应性序列扫描技术在心律不齐患者冠状动脉CT血管造影(CTA)中的应用价值探讨  

Dual-source CT low-dose adaptive sequence scanning technique in patients with arrhythmia in coronary CT angiography (CTA) and application value

作　　者：彭昌勇[1] 李俊峰[1] 刘一江[1] 颜吉平 李鑫[1] 张昊[1] 林豪[1] 张雪峰[1] 

机构地区：[1]四川达州市中西医结合医院CT室,四川达州635000

出　　处：《中国卫生产业》2013年第21期12-13,共2页China Health Industry

摘　　要：目的研究双源CT低剂量适应性序列扫描技术在心律不齐患者冠状动脉CT血管造影(CTA)中的应用价值。方法选择2011年3月—2013年4月在我院行双源CT冠状动脉CTA检查的心律不齐患者128例,分成A组(常规回顾性心电门控螺旋扫描,n=84)和B组(低剂量适应性序列扫描,n=64)。对比两组双源CT冠状动脉CTA的图像,比较两组患者的辐射剂量差异。结果根据冠状动脉血管显像的情况,A组诊断冠状动脉整体≥50%狭窄的特异性、敏感性、阳性预测值、阴性预测值和B组进行比较分析,差异无统计学意义(P>0.05)。A组的有效剂量为(8.0±0.1)mSv,明显高于B组(3.0±0.7)mSv,差异有统计学意义(Z=–9.824,P=0.00)。结论应用双源CT适应性序列扫描技术对心律不齐患者进行CTA检查时,可以明显降低辐射剂量,值得临床推广。Objective To study the value of dual-source CT low-dose adaptive sequence scanning technology arrhythmias in patients with coronary CT angiography （CTA）. Methods March 2011 to now missing in our hospital dual-source CTA, heart rhythm 128 patients divided into group A （conventional retrospective ECG-gated helical scan, n=84） and group B （low-dose adaptive sequential scan, n=64）. Compare the two sets of dual-source CT coronary CTA image, the two groups were compared differences in radiation dose. Results According to the case of coronary artery imaging, the whole of the group A diagnosis of coronary artery stenosis〉50% specificity, sensitivity, positive predictive value, negative predictive value, and Group B analysis, the difference between groups was not statistically significant （P〉0.05）. A group of effective dose of （8.0±0.1） mSv was significantly higher than that in group B （3.0±0.7） mSv difference was statistically significant （Z=-9.824, P=0.00）. Conclusion Arrhythmia in patients with CTA, can significantly reduce the radiation dose is worthy of clinical application of dual-source CT adaptive sequence scanning technology.

关 键 词：双源CT低剂量适应性序列扫描技术 冠状动脉CT血管造影(CTA) 

分 类 号：R541.7[医药卫生—心血管疾病]