联合使用低管电压及低剂量对比剂CT肺血管造影在肺动脉栓塞诊断中的应用  

Combined use of low-voltage,low-contrast CT pulmonary angiography in the diagnosis of pulmonary embolism

作　　者：韩迎春[1] 杨宏刚 李斌[1] 罗荣芳[1] 曹文广[1] HAN Yingchun;YANG Honggang;LI Bin;LUO Rongfang;CAO Wenguang(Department of Medical Imaging, Baoj i People＇s Hospital, Baoji 721001, Shanxi , China;Department of Radiology, Baoji Second Hospital, Baoji 721000, Shanxi, China)

机构地区：[1]宝鸡市人民医院医学影像科,陕西宝鸡721000 [2]宝鸡市第二中医医院放射科,陕西宝鸡721000

出　　处：《西部医学》2018年第6期919-922,共4页Medical Journal of West China

摘　　要：目的探讨联合使用低管电压、低剂量对比剂64排128层螺旋CT肺血管造影对肺动脉栓塞的诊断价值。方法纳入123例肺动脉栓塞患者,根据注射对比剂剂量以及管电压的不同随机分为常规剂量组(60例)和低剂量组(63例)。所有患者均采用64排128层螺旋CT肺血管造影进行二次诊断,常规剂量组采取管电压120kv,造影剂为150ml;低剂量组采取管电压100kv,造影剂为35ml,统计比较两组患者的诊断效果。结果低剂量组左、右肺静脉CT值均明显低于常规剂量组(P<0.05);低剂量组患者图像质量总体优良率明显高于常规剂量组,两组比较差异有统计学意义(P<0.05)。结论低电压、低对比剂条件下64排128层螺旋CT肺血管造影可以显著提升图像质量,有利于肺动静脉的影像区分,在CT肺血管造影肺动脉栓塞诊断中可行性较高。Objective To study the value of 64 - slice 128 - slice spiral CT pulmonary angiography in the diagnosis of pulmonary embolism under different conditions. Methods 123 pulmonary embolism patients, according to the injection of contrast agent dose and tube voltage, were randomly divided into conventional dose group （60 cases） and low-dose group （63 cases）. All patients were diagnosed by 64-slice 128-slice spiral CT pulmonary angiography for the second time. The conventional dose group took the tube voltage 120kv and the contrast agent 150ml. The low dose group took the tube voltage 100kv and the contrast agent 35ml. Diagnostic effect was observed. Results The CT values of the left and right pulmonary veins in the low dose group were significantly lower than those in the conventional dose group （P〈0.05）. The overall image quality of the low dose group （80. 95%） was significantly higher than that of the conventional dose group （43.33%） （P〈0.05）. Conclusion 64 - slice spiral CT pulmonary angiography with low voltage and low contrast medium can significantly improve the image quality, which is beneficial to the imaging differentiation of the pulmonary arteries and veins, and is feasible in the diagnosis of pulmonary embolism by CT pulmonary angiography.

关 键 词：低剂量 CT诊断 肺血管造影 肺动脉栓塞 效果 

分 类 号：R816.2[医药卫生—放射医学] R563.5[医药卫生—临床医学]