title: [Role of renal function and calcemia in demonstration of kidneys in 99mTc-diphosphonate skeletal scintigrams (author's transl)].
abstract: Normally, in 99mTc-diphosphonate-skeletal scintigrams the kidneys are delineated with the same intensity as the lumbar spine; This is not the case in patients with reduced renal function. In a series of 20 patients with varying degrees of renal insufficiency, a continuous decrease in the renal intensity with increasing serum creatinine was seen: clearly recognizable decreased renal intensity in patients with serum creatinine over 2 mg%, and no visualization of the kidneys in patients with serum creatinine over 8 mg%. This effect is intensified through a simultaneously existing hypercalcemia has the opposite effect, i.e., the intensity decrease is partially prevented. In patients with normal renal function a hypercalcemia even leads to an increased renal intensity. As a further cause for excessive renal intensity, an increased parenchymal transit time was found in the radionephrography in 5 out of 11 patients with normal serum creatinine in whom the increased renal intensity in the skeletal scintigram was a chance finding.
mesh_terms: D002118:Calcium / Q000097:blood; D003404:Creatinine / Q000097:blood; D004164:Diphosphonates; D006801:Humans; D007668:Kidney; D007676:Kidney Failure, Chronic / Q000175:diagnosis; D011877:Radionuclide Imaging; D012863:Skeleton; D013667:Technetium
chemical_list: D004164:Diphosphonates; D013667:Technetium; D003404:Creatinine; D002118:Calcium
vernacular_title: Nierendarstellung im 99mTc-Diphosphonat-Skelettszinitigramm in Abhängigkeit von Nierenfunktion und Kalzämie