双源CT 100kV管电压在冠脉成像中的应用价值  

Application of dual-source CT of 100kv tube voltage in low-dose computer tomography coronary angiography

作　　者：赵国华[1] 徐冰[1] 唐萍萍[1] 

机构地区：[1]北京市顺义区医院放射科,北京101300

出　　处：《心脏杂志》2015年第2期198-201,共4页Chinese Heart Journal

摘　　要：目的：探讨双源CT应用100 kV管电压扫描方案在冠状动脉成像中的应用价值。方法：将70例临床怀疑或确诊为冠心病患者,随机分为管电压100 kV组（低剂量组,35例）与120 kV组（常规组,35例）。其他条件一致,分别对两组图像质量和辐射剂量进行评价。入组条件：体质量指数（BMI）为20-24,窦性心率。结果：两组冠脉成像图像质量无显著差别,而100 kV辐射剂量较120 kV组显著降低（P〈0.01）。结论：应用双源CT做冠脉CT血管造影,给予100 kV管电压能够在保证图像质量,满足诊断要求同时降低辐射剂量。AIM： To evaluate the application of dual-source CT 100 kv tube voltage in low-dose computer tomography coronary angiography. METHODS： Seventy patients suspected of or diagnosed as having coronary disease（ with BMI 20-24% and sinus rhythm） were randomly divided into two equal groups：study group（ 100 kv tube voltage） and control group（ 120 kv tube voltage）. The image quality and radiation dose of the two groups were compared. RESULTS： No statistical difference was found in the scores of imaging quality between the two groups. The average effective radiation dose of the study group and control group were（ 3. 29 ± 0. 56） m Sv and（ 7. 22 ± 1. 43） m Sv,respectively,with significant differences between groups. CONCLUSION： Application of 100 kv tube voltage in CT coronary angiography can ensure good image quality and high diagnostic accuracy of coronary artery stenosis while it significantly reduces the radiation dose.

关 键 词：电子计算机体层扫描 双源 管电压 冠状动脉 辐射剂量 

分 类 号：R541.4[医药卫生—心血管疾病] R445.3[医药卫生—内科学]