abstract |
Porphyrin-complex compounds useful as contrast agents in magnetic resonance imaging (MRI) having the formula ##STR1## where Y is a transition metal such as Fe III , Cr III , Mn III , Mn II and Cu II , X is a biologically well-tolerated metal complexing anion such as Cl - , CF 3 SO 3 or CF 3 COO - and R is a nonionic water solubilizing moiety. |