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Fig. 3 | EJNMMI Research

Fig. 3

From: Head to head comparison of [99mTc]Tc(CO)3(NTA) and [99mTc]Tc-MAG3 in patients with suspected obstruction

Fig. 3

Subject 1: Two minute sequential images following the administration of [99mTc]Tc-MAG3 (338 MBq) and [99mTc]Tc(CO)3(NTA) (45 MBq) with the corresponding renogram curves. The subject receiving NTA had to get off the table to void at 20 min and was repositioned for the final frame. The relative uptake of the left kidney was 52% for NTA and 53% for MAG3. The T1/2 for 99mTc-MAG3 was 17.6 min compared to 4.0 min for NTA. Because of the images, renogram curve and prolonged T1/2, the right kidney of the MAG3 acquisition might be interpreted as being indeterminate or representing an obstructed kidney whereas the NTA acquisition demonstrates that the right kidney is not obstructed

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