title: Some comments on gamma-ray implant dosimetry.
abstract: Dosimetry calculations were made on the basis of recent photon interaction data and compared with existing sources. The build-up effect in muscle, photon attenuation in the source, filtration medium, and muscle, and 12 principal photon lines were incorporated in the calculations, and radium seeds of two standard dimensions were used. The results were within 1% agreement with previous findings for a 1-mCi radium source but showed an apparent discrepancy for a 13.3-mCi radium source filtered through a platinum tube, due to photon attenuation and scatter. These results may be extrapolated to fit circumstances such as drug-impregnated tissue.
mesh_terms: D005720:Gamma Rays; D006801:Humans; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy; D011883:Radium / Q000627:therapeutic use
chemical_list: D011883:Radium