Preoperative Multi-Detector Computed Tomography in Kidney Donors; Quantitative Data Report from Operation Rooms

Multi-detector computed tomography (MDCT) angiography is a non-invasive imaging modality, and is replacing the invasive conventional angiography in preoperative studies of vascular anatomy. To determine the accuracy of MDCT in diagnosis of the renal arterial and venous anatomy, urinary collecting system and kidney anatomy itself in living kidney donors. Patients and Methods: In the present prospective single-center study, 134 potential kidney donors (age: 25.65 ± 3.37 years) underwent MDCT and MDCT angiography in a single center (Aug 2012 - Oct 2013). The bolus tracking method was used. Arterial and venous anatomical variations and kidney size were assessed and compared with the surgical findings. MDCT angiography revealed renal arteries, their branching with 100% sensitivity, specificity, positive and negative predictive values. In addition, the sensitivity, specificity, positive predictive value and negative predictive value for MDCT angiography were 85.71%, 100%, 100% and 99.14%, respectively, in diagnosis of venous branching pattern. There is direct linear correlation between MDCT angiography and surgical findings in measuring arterial length and diameter, and kidney size (All P values < 0.001). Only one patient had ureteral duplication. MDCT determines the renal vascular and urinary collecting system anatomy, and kidney characteristics with almost 100% accuracy in kidney donors.