title: The renal washout parameter as an indicator of transplant rejection.
abstract: The accumulation of intravascular fibrin thrombosis in both acute and chronic renal rejection leads to a delay in the transit of perfusion. This study examines the renal washout parameter as an indicator of transit time. By mathematical simulation of renal time-activity curves various factors which can influence this parameter are investigated, a simple analysis is proposed and clinical results are correlated with biopsy findings. A washout parameter greater than 28 s is found to be consistent with histologically diagnosed rejection over a range of bolus qualities.
mesh_terms: D006084:Graft Rejection; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging; D016030:Kidney Transplantation; D008954:Models, Biological; D004369:Pentetic Acid; D011877:Radionuclide Imaging; D013667:Technetium; D016284:Technetium Tc 99m Pentetate; D013997:Time Factors
chemical_list: D013667:Technetium; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate