Diagnostic value of renal scintigraphy in detecting early kidney allograft complications

Early identification of kidney allograft complications is essential for preserving graft function. Serum creatinine is routinely used for post-transplant complications monitoring but has a lack of specificity in the early period. Imaging methods such as ultrasound (US) and renal scintigraphy (RS) provide complementary structural and functional information. The study aimed to assess temporal changes in scintigraphy perfusion index (PI), function index (FI), and glomerular filtration rate (GFR) in early kidney allograft complications and to compare these findings with ultrasonographic parameters. Methods. This single-center observational study included 65 kidney transplant recipients examined within the first 7 days post-transplantation. Thirty-two patients with stable graft function served as controls, while 33 patients developed early allograft complications. All patients underwent dynamic ⁹⁹ᵐTc-DTPA renal scintigraphy with calculation of the PI, FI and GFR on postoperative days 1, 3, and 7, as well as Doppler ultrasonography. Quantitative data were compared using nonparametric tests; p