Normal MAG 3

Case contributed by Ian Bickle
Diagnosis certain


Ultrasound appearances suggested a obstructed left kidney, thought to represent a PUJ obstruction.

Patient Data

Age: 45 years
Gender: Female
Nuclear medicine

Symmetrical uptake and excretion of radioisotope from both kidneys.

The relative uptake curves of both kidneys are identical and normal in appearance, with a rapid uptake followed by gradual excretion over 10 minutes.

Case Discussion

Tc-99m MAG3 (mercaptoacetyltriglycine) is one of the technetium radiopharmaceuticals used in renal imaging.  It largely taken up by tubular secretion.   It has a strong role in assessing the function of kidneys and in the assessment of an obstructed kidney.

DMSA is the main competiter radio-isotope renal imaging study, have a large role in the pediatric popuation.

This demonstrates a normal study (for reference) with identical uptake,excretion and curves.


How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.