A graphical method to determine the uptake of nuclides by workers

A method is presented which simplifies the estimation of the uptake, retention, and elimination of radioactive or stable nuclides following instantaneous ingestion or inhalation. A graph can be presented which shows the time-related presence of the element in organs of interest. It is not necessary to go back to the original differential equations used in the metabolic models or to resort to the publications which present their solutions. A glance at a graph and some simple calculations will allow the health professional to make the required determinations.