The use of Ga-EDTA PET allows detecting progressive decline of renal function in rats.

Introduction: Evaluation of glomerular filtration rate is very important in both preclinical and clinical setting, especially in the context of chronic kidney disease. It is typically performed using Cr-EDTA or by imaging with I-Hippuran scintigraphy, which has a significantly lower resolution and sensitivity as compared to PET. Ga-EDTA represents a valid alternative due to its quick availability using a Ge/Ga generator, while PET/CT enables both imaging of renal function and accurate quantitation of clearance of activity from both plasma and urine.