title: Review on photon treatment planning systems.
mesh_terms: D001918:Brachytherapy / Q000379:methods; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy*; D010347:Patient Care Planning; D011879:Radiotherapy Dosage
chemical_list: D003037:Cobalt Radioisotopes