High specific activity platinum-195m

摘要

A new composition of matter includes <195m>Pt characterized by a specific activity of at least 30 mCi/mg Pt, generally made by method that includes the steps of: exposing <193>Ir to a flux of neutrons sufficient to convert a portion of the <193>Ir to <195m>Pt to form an irradiated material; dissolving the irradiated material to form an intermediate solution comprising Ir and Pt; and separating the Pt from the Ir by cation exchange chromatography to produce <195m>Pt.