title: A conversion table for use with varying S.S.D. and depth in treatment planning.
abstract: In the clinical treatment of patients the physician often changes from treating S.S.D. to treating S.A.D. or another S.S.D. This alteration in treatment geometry can occur because of easier treatment set-up due to changes in the port size, the depth or other physical parameters. A group of tables has been developed and used for several years to present a single parameter from the multiple factors involved that will allow more simple conversion for the physician, physicist or technician performing the calculations without immediate access to a programmable computer or calculator. The tables are presented and examples of their use given for typical situations.
mesh_terms: D006801:Humans; D008433:Mathematics; D011879:Radiotherapy Dosage