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The renal artery when it reaches close to the hilum of kidney where it cleaves into anterior and posterior divisions were receives around 75% and 25% of blood respectively. Further these branches divide into many segmental branches. These segmental arteries does not have collateral system, so when there is any occlusion of these arteries which results in the ischemia of the particular segment of kidney. Anatomists believe that knowledge of presence of lower polar artery is essential for polar nephrectomy. Prior knowledge of variations in the renal vessels is required for urological surgery for pre-surgical investigations in order to minimize the surgical complications which include enormous haemorrhage. In this study we analyzed the different variations in the intra renal branch of inferior segmental artery. The present studies were done to analyze the intra renal arterial pattern of inferior segmental artery in kidney donors. In this study a total 99 CT angiogram images were analyzed in work station. The study group was drawn from kidney donors who approached the scan centre had no diseases related to kidney. In the 99 donors (198 kidneys) of the present study the inferior segmental branch shows, type 1 is seen in 66 kidneys on right side and 66 on left side, type2 is seen in 6 kidneys on right and 3 on left, type3 is seen in 11 kidneys on right and 12 on left, type 4 is seen in12 kidneys on right side and 13 on left side. Type5 is seen in 1kidney on right and 1 on left. In some kidneys we found inferior segmental arteries arising from common iliac and from middle segmental branch of renal artery. In this study, we analysed the results statistically. The precise knowledge of intra renal arterial branches will provide a significant contribution for urologist in performing conservative renal surgeries like partial and segmental resection of renal tissue instead of going for radical nephrectomy.

Analysis of Intra Renal Arterial Pattern in Kidney Donors using 64-Slice Computed Tomography Angiography