kidney: gallium imaging

10-20% of Ga-67 excreted via GU tract; no renal activity after 24hrs

abnormal uptake (images at 48-72 hrs):

tumor
- primary renal tumor (variable uptake)
- lymphoma/leukemia
- metastases (e.g., melanoma)
inflammation
- acute pyelonephritis (88% sensitivity); abscess
- lobar nephroma
others
- collagen vascular disease, vasculitis, Wegener granulomatosis
- amyloidosis, hemochromatosis
- hepatic failure
- antineoplastic drugs
- transplant rejection: acute, chronic, ATN