MSCT诊断泌尿系统疾病的价值研究

目的：探讨MSCT应用CTU重建成像在泌尿系统结石、占位及畸形中的技术与应用.方法：对泌尿系统多层螺旋CT扫描的病例91例,扫描包括常规薄层平扫、增强扫描（包括动脉期、静脉期、延迟期）.所有数据传输到Vitrea2后处理工作站进行MPR、CPR、VR及MIP等三维重建.结果：（1）重建图像质量与扫描方法、图像重建方法等密切相关（.2）所有病例图像三维重建后,图像能旋转、切割、放大等清晰显示泌尿系统整体和局部细微结构、形状、走行及与周围组织关系（.3）结石患者可显示结石位置、大小及扩张的肾盂和输尿管;（4）肿瘤者局部管腔内造影剂柱变细或突然中断,管壁不光整;单纯狭窄者管腔呈逐渐变细,管壁无增厚（.5）迷走血管压迫狭窄者均位于肾盂输尿管交界处（.6）重复肾并输尿管畸形者显示双肾盂、双输尿管.结论：采用适当的扫描方法和重建方法,MSCT应用CTU重建成像在泌尿系结石、占位、畸形诊断中与静脉泌尿系造影（IVU）相比有明显优越性,更能满足临床应用.

Study on the Value of MSCT in Diagnosis of Urinary System Diseases

Objective： To study the technology and application of multi-slice CT（MSCT） applied CTU imaging reconstruction in urinary calculi,space-occupying and abnormalities.Methods： Used spiral CT scanning urinary system for 91 cases.Scan including： conventional thin-layer scan,enhanced scan（including arterial phase,venous,the delay phase）.All data were transmitted to Vitrea 2 workstation for three-dimensional reconstruction such as MPR,CPR,VR and MIP.Results：（1）The quality of reconstructed image and the methods of scanning and image reconstruction were closely related.（2）After three-dimensional reconstruction of all cases,all images can be rotated,cut,enlarged.The images can clearly show the fine structure,shape,course of overall and partial urinary system and its relationship with the surrounding blood vessels.（3）In calculous patients,the images can show the location and size of stone and the expansion of renal pelvis and ureter.（4）In tumor patients,partial intraluminal contrast agent column became thin or suddenly be interrupted,canal wall was irregular.In simple stenosis,canal wall was tapered and no wall thickening.（5）Stenosis that caused by vagus vascular compression was located at ureteropelvic junction.（6）In duplex kidney with ureteral malformations,double renal pelvis and double ureter were shown.Conclusion： MSCT applied CTU reconstruction imaging has a more advantage in the diagnosis of urinary calculi,space-occupying and abnormality than intravenous urography（IVU）,and can better satisfy clinical application.