title: Radionuclide perfusion scans in the assessment of acute renal transplant rejection.
abstract: Acute renal transplant rejection is a diagnostic and management problem. In the oliguric patient clinical evaluation and biochemical tests are less helpful than in those with a functioning graft. The perfusion index derived from a 99mTc-diethylenetriamine penta-acetic acid scan may be a more reliable marker of acute rejection. We studied 20 consecutive renal transplant recipients with serial radionuclide imaging to assess the usefulness of the perfusion index. Seventy-two of 74 episodes of acute rejection were evaluated. Thirty-three (46%) episodes were predicted or supported by a change in the perfusion index. In the non-functioning transplant, 12 of 15 (80%) acute rejection episodes were predicted or supported. A scan obtained the day after transplantation confirmed graft artery patency in all patients. The perfusion index is a useful diagnostic test for the diagnosis and management of acute rejection, particularly in the non-functioning transplanted kidney.
mesh_terms: D006084:Graft Rejection; D006085:Graft Survival; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging; D007668:Kidney / Q000000981:diagnostic imaging; D016030:Kidney Transplantation; D004369:Pentetic Acid; D010477:Perfusion; D011184:Postoperative Period; D011379:Prognosis; D011446:Prospective Studies; D011877:Radionuclide Imaging; D013667:Technetium; D016284:Technetium Tc 99m Pentetate
chemical_list: D013667:Technetium; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate