title: Dose calculation and measurements for a CT compatible version of the Fletcher applicator.
abstract: Experimental measurements in a water phantom were made for a new shielded plastic Fletcher applicator. A dose calculation algorithm which allows the description of asymmetrically shielded source containers is presented. The traditional primary plus build-up factor description of the dose in a homogeneous volume is corrected by using effective attenuation coefficients measured in a water phantom for all the source-shield-container materials. Comparison of the theoretical results to the experimental data shows excellent agreement.
authors.affiliation: Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor 48109.
authors.forename: K J
authors.initials: KJ
authors.lastname: Weeks
authors.forename: J C
authors.initials: JC
authors.lastname: Dennett
mesh_terms: D001918:Brachytherapy / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006801:Humans; D008961:Models, Structural; D011835:Radiation Protection / Q000295:instrumentation; D011874:Radiometry / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*; D002583:Uterine Cervical Neoplasms / Q000000981:diagnostic imaging / Q000532:radiotherapy*