摘要
目的:介绍在静脉肾盂造影无法明确输尿管梗阻的原因时 ,利用16层螺旋CT尿路造影辅助诊断输尿管梗阻的方法。材料和方法:收集经静脉肾盂造影 (IVP)提示为输尿管梗阻而原因不明的患者共28例 ,患者行IVP检查后立即接受多层螺旋CT平扫。CT机为16层螺旋CT机。扫描参数为100kV/250mAs,准直器宽10mm ,螺距1.31,重建层厚0.625mm ,间隔0.5mm,扫描方式为16层扫描。每例均转入SUN工作站(ADW4.0版本)进行三维重建 ,分别运用多平面重建和容积重建三维重建。且选用Navigation进行仿真内镜。结果:28例输尿管梗阻IVP无法明确原因的患者,16层螺旋CT和CTU分别明确诊断为炎性狭窄4例 ,肿瘤4例 ,先天性发育异常2例 ,阴性结石2例 ,以上均为手术证实。诊断为外压性狭窄11例 ,另有5例仍无法确诊,仅约占17.9%。结论:IVP提示输尿管梗阻时立即行多层螺旋CT平扫和三维重建是一种行之有效的、明确病因诊断的、辅助诊断方法。
Purpose:To introduce a method of complementary diagnosis of ureteral obstruction with16-row spiral CT urography(CTU),while IVP cannot give the etiological diagnosis.Materials and Methods:28cases of ureteral obstruction with unknown reason by IVP were collected.All of them got16-row MSCT(lightspeed ultra16,GE medical system)examination immediately after IVP examination with some contrasted media still in urinary tract,and the scanning parameters were100kV/250mAs,collimeter:10mm,pitch:1.3:1,reconstruction slice thickness:0.625mm,interval:0.5mm.All the cases were transˉferred to the SUN workstation(ADW4.0edition)and were reconstructed with MPR(multiple plane reˉconstruction,MPR)and VR(volume rendering,VR).Results:Of all the28cases,4cases of inflammatory constriction,4case of tumor,2cases of congenital diseases,2cases of negative stone(all above were confirmed by surgery),and11cases of compressed stenosis were diagnosed definitely by16-row MSCT and CTU.But still there were5cases not be confirmed,occupying17.9%or so.Conclusion:16-row MSCT and CTU immediately after IVP may become a cost-effective complement diagnostic method for ureteral obstruction.
出处
《中国医学计算机成像杂志》
CSCD
2004年第4期246-249,共4页
Chinese Computed Medical Imaging
