In order to compare the performance of "all-in-one" magnetic resonance imaging (MRI) and "all-in-one" multidetector computed tomography (MDCT) in the preharvest evaluation 25 potential living donors underwent both MRI and MDCT. MRI was performed on a high-performance 1.5-T scanner, computed tomography (CT) on a 4-row multidetector-scanner. Both scan protocols included angiography of the arterial and venous hepatic systems. CT additionally included infusion of a biliary contrast agent. Data analysis was performed by 4 reviewers, based on source images, multiplanar reformats, and three-dimensional ( L iving donor liver transplantation has evolved into a widely accepted therapeutic option to alleviate the persistent shortage of cadaveric liver transplants. [1][2][3] This innovative procedure allows healthy adults to donate a portion of their liver to compatible recipients suffering from end-stage liver disease. [4][5][6][7] Besides of augmenting the transplant organ pool, living donor liver transplantation involves the advantage of performing an elective operation, access to a graft in best condition, and lowering the likelihood of recipient death while waiting for a suitable organ. 8 In combination with improved surgical technique and highly developed immunosuppression, 9 this results in recipient survival rates as good as those obtained after conventional liver transplantation with full-sized deceased donor organs. 10 The critical issue of this procedure is the risk to the donors, who were healthy until the transplantation; this risk is now estimated to be 0.5% mortality and 21% postoperative morbidity. 1,11,12 To reduce such risk to a minimum, and also to avoid donor-recipient mismatch, the potential donors have to undergo an extensive stepwise evaluation process before being admitted to donation. Special attention is hereby paid to the determination of the liver volumes 13-17 and the recognition of vascular anomalies. [18][19][20] In fact, a majority of the candidates is eliminated mostly due to unfavorable hepatic parenchymal, biliary, or vascular morphology.In the recent past, this preharvest assessment