title: Technical note: improved analytical fit to the TG-43 radial dose function, g(r).
abstract: An improved analytical fit for the TG-43 radial dose function, g(r), is presented using a modified sigmoid function. Fit coefficients and graphs are provided for comparison with the polynomial fits given in TG-43.
authors.affiliation: Atlanta Oncology Associates, Gulf Coast Cancer Treatment Center, Panama City, Florida 32444, USA.
authors.forename: D C
authors.initials: DC
authors.lastname: Moss
mesh_terms: D001918:Brachytherapy / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D007457:Iodine Radioisotopes / Q000627:therapeutic use; D007496:Iridium Radioisotopes / Q000627:therapeutic use; D015233:Models, Statistical; D010165:Palladium / Q000627:therapeutic use; D011868:Radioisotopes / Q000627:therapeutic use; D011874:Radiometry / Q000379:methods*
chemical_list: D007457:Iodine Radioisotopes; D007496:Iridium Radioisotopes; D011868:Radioisotopes; D010165:Palladium