Framework and need for dosimetry and measurements: quantitation matters.

It has always been recognized that radiation measurements and dosimetry (M &8; D) play a crucial role in developing radiation protection programs for workers and members of the public, particularly as they relate to mitigating potential health risks from exposure to radiation. The National Council on Radiation Protection and Measurements (NCRP) has always devoted significant resources to these scientific disciplines in terms of its published reports, and it is anticipated that this emphasis will continue. This includes focus on both external and internal radiation exposure as well as radiation and radioactivity measurement methodology. NCRP, as part of its management of scientific activities, has designated Program Area Committee 6 to focus on radiation M &8; D. This paper briefly describes how radiation M &8; D has been addressed historically in terms of NCRP activities. It reports how the emphases have changed over the years and how NCRP has worked effectively with other radiation protection organizations, such as the International Commission on Radiological Protection, to leverage its expertise in advancing the science of M &8; D. Current and prospective activities in M &8; D by NCRP are also described to frame the future in these areas of interest necessary for the optimum application of radiation protection principles and programs.