双源CT双能量成像虚拟平扫技术在泌尿系统结石的应用研究

发布时间：2018-05-27 23:37

本文选题：双源双能量CT虚拟平扫 + 结石　；参考：《全科医学临床与教育》2016年02期

【摘要】：目的评价双源双能量CT虚拟平扫(VNCT)泌尿系成像在在检查泌尿系统结石中的价值。方法选择91例临床怀疑泌尿系结石并行双源双能量CT检查的患者,包括全腹部常规平扫(CNCT)及增强动脉期检查、肾脏排泄期双能量扫描。比较CNCT和VNCT对泌尿系统结石的检出率、CT平均容积剂量指数(CT DIvol)和剂量长度乘积(DLP)。结果 CNCT、VNCT两种方法在肾内、输尿管腹段、输尿管盆段、输尿管膀胱壁内段和膀胱内的结石检出率比较,差异均无统计学意义(χ~2分别=0.29、0.12、0.26、0.25、-0.16,P均0.05)。CT DIvol和DLP在CNCT、VNCT和DSCT动脉期的差异均有统计学意义(F分别=62.89、36.02,P均0.05)。两两比较显示,CT DIvol和DLP在DSCT动脉期均高于CNCT和VNCT,差异有统计学意义(t分别=6.79、6.99、6.79、6.65,P均0.05)。结论 VNCT与CNCT在泌尿系统结石检出率具有很高一致性。VNCT因减少一次扫描,可降低辐射剂量。
[Abstract]:Objective to evaluate the value of dual source dual energy CT virtual plain scan (VNCT) urography in the examination of urinary calculi. Methods 91 patients with suspected urinary calculi underwent dual source and dual energy CT, including conventional plain scan of the whole abdomen, enhanced arterial phase examination, and renal excretory phase double energy scan. To compare the detection rate of CNCT and VNCT in urolithiasis with CT mean volumetric dose index (DCI) and dosimetric length product (DLP). Results the detection rate of calculi in kidney, ventral ureter, ureteropelvic segment, ureteral bladder wall and bladder were compared between CNCTV and VNCT. There was no significant difference between the two groups (蠂 ~ 2 = 0.29 ~ 0.12 ~ 0.26 ~ 0.26 ~ (-0.16) P). The difference of 0.05).CT DIvol and DLP in the arterial phase of CNCTT and DSCT were statistically significant (蠂 ~ (2) = 0.29 ~ 0.12 ~ (0.26) ~ 0.26 ~ 0.16) P = 0.05 ~ (-1), P = 62.89 ~ 36.02%, respectively. The results of pairwise comparison showed that CT DIvol and DLP were higher than CNCT and VNCTs in arterial phase of DSCT, and the difference was statistically significant (P < 0.05). Conclusion the positive rate of VNCT and CNCT in urolithiasis is highly consistent.
【作者单位】：湖州市第一医院泌尿外科;临安市人民医院泌尿外科;浙江大学医学院附属第二医院泌尿外科;
【分类号】：R691.4;R816.7

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