Patent ID: 7813841

Claim:
A method of controlling an 82 Sr/ 82 Rb elution system having a generator valve for proportioning a flow of saline solution between an 82 Sr/ 82 Rb generator and a bypass line coupled to an outlet of the generator such that saline solution traversing the bypass line will merge with eluted saline solution emerging from the generator to provide an active saline solution, the method comprising steps of: during each elution run: obtaining a plurality of successive concentration parameter values at predetermined intervals, each concentration parameter value being indicative of a respective instantaneous activity concentration of the active saline solution; computing respective error values between each concentration parameter value and a target activity concentration value of the elution run; and accumulating error data based on a plurality of the computed error values; and between successive elution runs, adjusting at least one performance parameter of the elution system based on the accumulated error data wherein adjusting at least one performance parameter of the elution system comprises an adjustment to a model of the generator valve response.