A study of 11C-benzoate as a radiopharmaceutical for renal imaging.
11C-benzoic acid prepared in a radiochemical purity over 90% was studied radiopharmacologically in mice and rabbits. The uptake of 11C-benzoate in ICR mice increased quickly. The ratio of kidney uptake rate to that in other organs reached values between 9 and 55 with a maximum at 10 min after i.v. injection. Gamma camera imaging of rabbits showed that uptake in the kidneys began at 2 min after injection and that activity began to appear in the bladder 4 min later. Rabbits with left renal artery ligature showed no uptake in the left kidney but the right kidney was imaged to the same extent as that of a rabbit without artery ligature. The kidney imaging of 11C-benzoic acid may be a useful method for renal diagnosis.
D000818:Animals; D001565:Benzoates / Q000378:metabolism; D019817:Benzoic Acid; D002250:Carbon Radioisotopes; D007668:Kidney / Q000000981:diagnostic imaging* / Q000378:metabolism; D008297:Male; D051379:Mice; D011817:Rabbits; D011877:Radionuclide Imaging; D014018:Tissue Distribution
D001565:Benzoates; D002250:Carbon Radioisotopes; D019817:Benzoic Acid