双源CT多平面及三维重建技术对泌尿系疾病应用研究.docVIP

双源CT多平面及三维重建技术对泌尿系疾病应用研究[摘要] 目的 探讨双源CT后处理多平面及三维重建技术对泌尿系疾病应用分析。方法 对42例(正常肾9例，正常输尿管5例，泌尿系疾病28例)泌尿系患者行双源CT扫描后均采用后处理多平面及三维重建技术对横断面图像进行重建。结果 根据疾病和诊断目的的不同采用不同的重建方法进行重建。最大强度投影(MIP)图像对肾动脉狭窄及分泌期全尿路显示有很好的效果，多平面重建(MPR)图像可用于显示各种占位病变的位置、大小、范围等，曲面重建(CPR)对全输尿管迂曲显示有独到之处，表面遮盖显示(SSD)和容积再现重建(VR)图像适用于显示肾脏畸形、肾脏肿块和输尿管变异等。结论 对于不同的泌尿系疾病采用不同的三维重建方法对疾病的诊断有很大帮助，大大提高了诊断的准确率。 [关键词] 双源CT； 三维重建； 泌尿系疾病 [中图分类号] R69 [文献标识码] B [文章编号] 1005-0515（2012）-01-005-02 Diagnosis Value of 3-dimension Reconstruction Technique of Multi-slice CT in the Diseases of Urinary System Li Wei1 Wu Guanxin2 Zeng Fanrong1 Peng Xia1 (1The Image Center CT Room of 154 Hospitals in Xinyang,Henan,Xinyang,464000,China; 2 The Department of Radiology of the People’s Hospital in Shishou, Hubei, Shishou, 434000, China) [Abstract] Objective To investigate the clinical application value of three-dimensional (3D) reconstruction technique of multi-slice computed tomography (MSCT) in the disease of urinary system. Methods MSCT was performed in 42 patients, of which 9 was normal kidney,5 was normal ureter,28 had urinary disease. All the axial images were reconstructed using 3D technique. Results Different reconstruction method should be used according to the type of disease and diagnostic purpose.MIP can display stenosis of renal artery and full view of the urinary system better, MPR can display the location, size, and range of focus.CPR and VRT are fit for display of the abnormality, mass, stones of kidney and anomaly of ureter. Conclusion It is helpful for the diagnoses of different disease to use different reconstruction method according to the type of disease of urinary system. [Key words] Multi-slice computed tomography; Three-dimensional reconstruction; Urinary disease 由于整个泌尿系统范围较广，采用常规CT薄层扫描时，短时间内难以将整个泌尿系全部扫描完，同时放射线量大，对机体损伤也较大。随着CT设备快速发展，双源CT扫描速度快，扫描层厚薄，一次扫描在纵轴方向上比单层螺旋CT采集的范围更广，曝光时间明显缩短，因此双源CT可以根据扫描的需要，即使采用很薄的层厚扫描也可以在较短时间内扫描很广的范围，并能薄层容积重建。 1 资料和方法 1.1 对象 收集我院42例泌尿系疾病的患者进行多平面及三维重建。其中正常14例(肾9例，输尿管5例)，泌