Monte Carlo modelling of in vivo X-ray fluorescence of lead in the kidney

A Monte Carlo program has been written to model the in vivo x-ray fluorescence of lead in the kidney, to aid the choice of one of four candidate fluorescing source/measurement geometry combinations: 109Cd/180 degrees, 57Co/90 degrees and 99Tcm at both 180 degrees and 90 degrees. Computational studies and practical considerations led to the choice of 99Tcm in a backscatter geometry for the measurement system.