Application of 64-slice Volume CT Urography in the Diagnosis of Urinary Congenital Malformation

Purpose To evaluate the diagnostic value of 64-slice volume CT urography(VCTU) in the urinary congenital malformation.Materials and Methods 66 cases with urinary congenital malformation confirmed by surgery or ureteroscopic findings undertook VCTU.The postprocessing images including volume rendering(VR),maximum intensity projection(MIP),multiplanar reconstruction(MPR),and curve planar reconstruction(CPR) were achieved.Results Among the 66 cases(2 cases with multi-malformation),there were 32 cases of duplication of renal pelvis and ureter,7 cases of horseshoe kidney,6 cases of renal malrotaion,5 cases of calyceal diverticulum,5 cases of ureteropelvic junction stenosis,1 case of congenital megaureter,1 case of ectopic ureter,1 case of retrocaval ureter,3 cases of ureterocele,and 7 cases of bladder diverticulum.The postprocessing images were clear and stereoscopic.The diagnostic accuracy of VCTU was 100%.Conclusion With the VR,MIP,MPR and CPR reconstruction techniques,VCTU can correctly display urinary congenital malformation and the associated diseases,which can improve the clinical detection rate and diagnostic accuracy of urinary congenital malformation.VCTU can be used as a preferred diagnostic method for urinary congenital malformation.