الفهرس 
Introduction & Aim of the workOnly 14 pages are availabe for public view
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Abstract
Renal allografts frequently require repeated imaging studies during the immediate post-operative period to detect the post-transplantation complications, when renal function is compromised. MRI offers multiple advantages in the assessment of renal transplants; it provides cross sectional and vascular information without the risk of ionizing radiation, iodinated contrast or arterial catheterization. The objective of this work was to evaluate the role of MRI in assessment of kidney transplants as regards; renal function, parenchymal morphology, vascular anatomy, the capability of MRI to diagnose and differentiate various post-transplant medical and surgical complications. This study was carried out on 90 renal transplant recipients in Urology and Nephrology Centre, Mansoura University. They were subjected to the following radiological modalities: 1. MRI, MRA and Gd-enhanced MRU. 2. Static heavy T2-weighted and single-shot MRU. 3. Radio-isotope diuretic renogram using 99mTc-DTPA. The Results of MRI and renal scintigraphy were compared with histopathological findings, interventional techniques and operative findings whenever performed. BOLD MRI in detection of ATN, sensitivity of cortical R2* was 90% specificity was 82.5%, Sensitivity of Medullary R2* was 85% and specificity was 87.5%. that was superior than detection of acute rejection. The sensitivity, specificity, overall accuracy, positive predictive value and negative predictive value for MRI in detection of peri-graft hematoma were 85.7%, 98.9%, 99.4%, 75% and 99.4%, for urinoma, they were 83.3%, 100%, 99.4%, 100% and 99.4% while for lymphocele, they were 80%, 98.8%, 98.9%, 80% and 98.8%.