title: A simple objective parameter for perfusion study of renal transplant.
abstract: We proposed a simple parameter, the kidney-to-aorta ratio (KAR), for evaluation of renal transplant perfusion. KAR was calculated from the peak counts of the kidney and the aorta. The calculated values were compared with the visual interpretation of the radionuclide first-pass flow study, percent renal uptake (%RU), and tubular extraction rate (TER) by Bubeck's one point sampling method in 37 studies. KAR correlated well with the visual interpretation of the flow study and the other quantitative parameters. Representative cases, which showed the usefulness of KAR for the objective assessment of the perfusion status of renal transplants, were presented. In conclusion, KAR is a simple and practically useful parameter for objective evaluation and follow-up of renal transplant perfusion.
authors.affiliation: Department of Radiology, Hachioji Medical Center, Tokyo Medical University, Japan. kkoi@tokyo-med.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Koizumi
authors.forename: H
authors.initials: H
authors.lastname: Kakiuchi
authors.forename: T
authors.initials: T
authors.lastname: Saguchi
authors.forename: S
authors.initials: S
authors.lastname: Inoue
authors.forename: S
authors.initials: S
authors.lastname: Fuse
authors.forename: E
authors.initials: E
authors.lastname: Kawakami
authors.forename: A
authors.initials: A
authors.lastname: Yamazaki
authors.forename: K
authors.initials: K
authors.lastname: Kozaki
authors.forename: T
authors.initials: T
authors.lastname: Nagao
mesh_terms: D000328:Adult; D015902:Gamma Cameras; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D016030:Kidney Transplantation / Q000473:pathology / Q000502:physiology*; D007683:Kidney Tubular Necrosis, Acute / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D010477:Perfusion; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics; D012044:Regression Analysis; D012079:Renal Circulation; D015203:Reproducibility of Results; D017263:Technetium Tc 99m Mertiatide / Q000493:pharmacokinetics
chemical_list: D019275:Radiopharmaceuticals; D017263:Technetium Tc 99m Mertiatide