Patent ID: 8242464

Claim:
A process of determining the extent and amount of exposure to radiation for a portion of a population, comprising the sequential steps of: 1) providing a radiation detection device to individuals of said portion of said population, wherein the radiation detection device contains at least one self indicating radiation sensor and at least one accredited sensor wherein said radiation detection device is rectangular with each side having a length of at least 1 mm to no more than 100 mm and a thickness of 0.1 to 5 mm; 2) inspecting the self indicating radiation sensor of said radiation detection devices by visual inspection to determine if exposure has occurred, wherein a change of color in the self indicating radiation sensor indicates an exposure; 3) categorizing said portion of population into exposed individuals and unexposed individuals wherein each said exposed individual is indicated by a change of color in said self indicating radiation sensor; 4) reading said accredited sensor in said radiation detection device of only said exposed individuals with a machine reader to determine if an actual dose above a threshold amount of said exposure has occurred; and 5) determining a number of individuals receiving above said threshold amount.