Let's abandon geometry factors other than that of a point source in brachytherapy dosimetry.
Meli
Jerome A
JA
D055592:Biophysical Phenomena; D001703:Biophysics; D001918:Brachytherapy / Q000592:standards / Q000706:statistics & numerical data; D006801:Humans; D011880:Radiotherapy Planning, Computer-Assisted / Q000592:standards* / Q000706:statistics & numerical data; D012955:Societies, Medical; D014481:United States