A. Birchall et Ac. James, A RAPID METHOD FOR MODELING THE KINETICS OF RADIOACTIVE PROGENY APPLIED TO THORIUM IN THE LUNGS, Health physics, 67(2), 1994, pp. 162-169
A general method for solving first-order compartmental models (recycli
ng and nonrecycling) with any number of radioactive progeny is describ
ed and a heuristic proof of the method is provided. The method can be
applied to any system where the progeny are assumed to behave isokinet
ically with the parent, as is the case with the biokinetic models curr
ently recommended by the ICRP. The method is simple to apply, and its
application to the modeling of radioactive progeny in the lungs follow
ing inhalation of thorium oxides is illustrated. The new ICRP respirat
ory tract model is used for this illustration.