不同剂量多排螺旋CT尿路成像技术对尿路病变诊断效能的对比

摘要

目的:探讨不同剂量多排螺旋CT尿路成像技术(CTU)对尿路病变的诊断价值.方法:选择2015年1月至2016年12月在我院行CTU检查的尿路病变患者60例作为研究对象,按照随机数字表法分为3组:160 mA管电流组(Ⅰ组)、120 mA管电流组(Ⅱ组)和80 mA管电流组(Ⅲ组).所有患者均采取对应的管电流CTU检查.对比分析3组患者尿路病变的诊断效能及3组患者CTU成像效果评分、碘对比剂用量及辐射有效剂量.结果:Ⅲ组患者碘对比剂用量、辐射有效剂量较Ⅰ组、Ⅱ组低,且Ⅱ组较Ⅰ组低,差异有统计学意义(P＜0.05).3组患者CTU成像效果评分差异无统计学意义.结论:低剂量(80 mA管电流)CTU对尿路病变的诊断效能等同于高剂量CTU,且碘对比剂用量、辐射有效剂量明显降低,值得临床推广.%Objective:To explore the diagnostic value of low dose multi-detector computed tomography urography (CTU) in patients with urinary tract diseases.Methods:Sixty patients who were treated with CTU from January 2015 to December 2016 were included in this study.All patients were divided into three groups according to the random number method.Group Ⅰ (160 mA tube current),group Ⅱ (120 mA tube current) and group Ⅲ (80 mA tube current),the selected patients were taken to the corresponding tube current CTU.The diagnostic efficacy of three groups of uropathy was analyzed,and the three groups of CTU imaging results,iodine contrast agent dosage and radiation dose of the situation were compared.Results:The dose of iodine contrast agent and the effective dose of radiation in group Ⅲ were lower than those in group Ⅰ and group Ⅱ,and the dose of radiation and dose of iodine contrast agent in group Ⅱ were lower than those in group Ⅰ (P＜0.05).The difference of CTU imaging scores between the three groups was not statistically significant.Conclusions:The diagnostic value of low-dose (80 mA tube current) CTU in urinary tract diseases is similar to the high-dose CTU,with the iodinated contrast agent dosage and effective dose of radiation reduced significantly,which is worth of clinical promotion.