A comparison of excretion and retention between the current ICRP lung model and a proposed new model.

The current International Commission on Radiation Protection (ICRP) lung model (Health Phys. 12: 173; 1986) was developed from information available in the early 1960s. Since that time considerable new information on lung morphology, deposition, and retention has become available and, where appropriate, has been incorporated into a new model being discussed by a Task Group of the ICRP.