| abstract |
An embodiment of the invention comprises method of imaging a target site comprising administrating ligand of Formula I complexed to 99m Tc n n n n n n n n n n wherein R 1 and R 2 are independently an alkyl or cycloalkyl; R 3 is and alkyl; X is CO or SO 2 ; Y is (CH2) n , C 6 H 4 , (OCH 2 CH 2 ) n (NHCH 2 CH 2 ) n and (OCH 2 CH 2 CH 2 ) n , or a combination thereof; Z is linker group capable of conjugating to a vector; and n is an integer between 0 and 10. |