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99mTc-2GAM: a tracer for renal imaging.

Abstract：

:We propose a renal imaging agent, the 99mTc complex of the bidentate-N,S chelate N-(mercaptoacetyl)glycine (99mTc-2GAM), with the imaging characteristics of 99mTc-DMSA but a faster kidney uptake; chemical evidence supports the formulation of 99mTc-2GAM as [Tc(v)(O)(GAM)2]-. After biodistribution and toxicity studies in animals, 99mTc-2GAM was evaluated in five normal volunteers. 99mTc-2GAM is rapidly cleared from the blood (t1/2 = 9 min) and 50% of the ID is excreted in the urine in the first 2 h. Dynamic data show a rapid renal uptake that increases up to 1 h with no significant wash-out between 1 and 8 h. The uptake in each kidney ranges from 11.3% to 20.7% ID. Low, stable liver uptake is observed. No significant activity is detected in other organs. We showed no differences between 99mTc-2GAM and 99mTc-DMSA compared in three patients with unilateral kidney disease. We conclude that 99mTc-2GAM has good practical and dosimetric features for renal imaging.

journal_name

Nucl Med Biol

journal_title

Nuclear medicine and biology

authors

Gianolli L,Dosio F,Matarrese M,Colombo F,Cutler C,Stepniak-Biniakiewicz D,Deutsch E,Savi A,Lucignani G,Fazio F

doi

10.1016/s0969-8051(96)00135-7

subject

Has Abstract

pub_date

1996-11-01 00:00:00

pages

927-33

issue

8

eissn

0969-8051

issn

1872-9614

pii

S0969805196001357

journal_volume

23

pub_type

杂志文章

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