双能量减影数字摄影技术在胆道造影的应用  

The Application of Dual Energy Subtraction in IVC Examination

作　　者：李汉文[1] 林建华[1] 陈双[1] 余林[1] 梁月屏[1] 

机构地区：[1]广州医学院第二附属医院放射科,广州510260

出　　处：《现代临床医学生物工程学杂志》2006年第2期117-118,共2页Journal of Modern Clinical Medical Bioengineering

摘　　要：目的用双能量减影数字X线摄影术提高胆道系统病变的检出率。方法取25例胆道造影病例,分别测量计算减影前后胆囊胆道内造影剂及结石与肝区的灰度值差。结果减影后胆囊胆道内造影剂及胆道结石与肝区的灰度差较减影前的灰度差明显增大,胆道及结石显示更明显。结论双能量减影数字化摄影术作为胆道造影检查的一种新手段,能使图像的对比度明显增加,提高胆道系统病变的检出率。Objective To improve the positive rate of biliary tract diseases with dual energy subtraction radiography. Methods We have explored and calculated the vahe of liver and that of biliary tract before and after subtraction and compared their differences in 25 cases of patients with IVC. Results The differatiations of the value of liver and biliary tract were much higher after subtraction than that without subtraction. Conclusions As a brand - new technique, the dual energy subtraction can increase the image contrast in IVC examination and raise the positive rate of biliary tract diseases, so that a better differential diagnosis can be made.

关 键 词：双能量减影 直接数字X线摄影 胆道造影术 

分 类 号：R816.5[医药卫生—放射医学]