Abstract
A program has been written for dose infroma-tion around multiple-radium sources in arrays similar to those found in gynecological situations. Arrangement of sources is measured on anteroposterior and lateral radiographs and transferred to the computer (IBM 1620) by means of punch cards. Output may take the form of a tabular listing of coordinate points and corresponding dose rates, or of a plot containing isodose information. Any plane (at 1 mm intervals) parallel to either of the source radiographs may be chosen for plotting, and successive choices of planes for a given patient are easily made.