Transplant renography: 99m-Tc-DTPA versus 99m-Tc-MAG3. A preliminary note.
99mTc-MAG3 has been proposed as a replacement for both 131I-hippuran and 99mTc-DTPA on clinical grounds. We undertook a prospective preliminary study to ascertain whether 99mTc-MAG3 works better than 99mTc-DTPA in the follow up of renal transplant recipients. Seventeen patients (21 renograms each MAG3 and DTPA) were studied, together, with a reference group of 10 patients in whom MAG3 and Hippuran clearance rates were determined simultaneously. As expected, 99mTc-MAG3 analog images were excellent and 99mTcMAG3 clearance correlated very well with 131I-hippuran clearance (r = 0.978). MAG3 values were 60% of hippuran values. However, when the corresponding renographic and perfusion findings were faced with different diagnostic challenges, such as post transplant renal failure and rejection, 99mTc MAG3 did not differ from 99mTc-DTPA in a significant way. 99mTc-DTPA was superior to 99mtc-MAG3 in one case of rejection.
Fraile
M
M
Nuclear Medicine Service, Hospital General Vall d'Hebron. Barcelona, Spain.
Castell
J
J
Buxeda
M
M
Cuartero
A
A
Cantarell
C
C
Domenech-Torné
F M
FM
D000328:Adult; D005260:Female; D006801:Humans; D016030:Kidney Transplantation; D008297:Male; D009842:Oligopeptides; D015609:Organotechnetium Compounds; D004369:Pentetic Acid; D011866:Radioisotope Renography / Q000379:methods*; D017263:Technetium Tc 99m Mertiatide; D016284:Technetium Tc 99m Pentetate
D009842:Oligopeptides; D015609:Organotechnetium Compounds; D017263:Technetium Tc 99m Mertiatide; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate