CTA is a minimally invasive modality to image the vasculature without the morbidity of direct large vessel vasculature access and its major indications in urology are assessment of the renal vasculature in preparation for donor nephrectomy , indentification of extravessel in evaluation of ureteropelvic junction obstruction and for diagnosis of renal artery stenosis. To assess the accuracy of CTA for the evaluation of renal vascular anatomy for preoperative donor assessment in living kidney transplantation,CTA of 70 living donor kidney donors were analysed by two blinded observers and compared with intraoperative findings. Similarly findings of conventional angiography of 30 living kidney donors compared with intraoperative observations. In CTA group there were two patients each with two main renal veins on surgery that had not been seen on CTA. In the second group there was one patient with unrevealed two main renal veins before surgery. In both groups , all patients were diagnosed accessory renal arteries , if existed. Discussion: Overall, the accuracy for main renal artery anatomy was 100% for both CTA and conventional angiography. Accuracy for main renal vein anatomy was 97.1% and 96.6% for CTA and conventional angiography, respectively. Hence, these two modalities had comparable results for main renal vasculature anatomy detection.