6533b823fe1ef96bd127e217
RESEARCH PRODUCT
Dosimetric characteristics of the CDC-type miniature cylindrical 137Cs brachytherapy sources
V. PuchadesY. LimamiE. CasalM. A. Serrano-andrésFacundo BallesterJ. L. LluchJose Perez-calatayudsubject
Physicsbusiness.industryAirRadiotherapy Planning Computer-Assistedmedicine.medical_treatmentAttenuationBrachytherapyMonte Carlo methodBrachytherapyGeneral MedicineComputational physicslaw.inventionlawLookup tablemedicineDosimetryCartesian coordinate systemRadiometryRadiation treatment planningDose rateNuclear medicinebusinessMonte Carlo MethodAlgorithmsdescription
The low dose rate CDC-type miniature cylindrical 137 Cs sources are available, with one or three active beads, for use in source trains in automatic and manual afterloading systems for gynecological brachytherapy. Absolute dose rate distributions in water have been calculated around these sources using the Monte CarloGEANT3 code and they are presented as conventional two-dimensional Cartesian lookup tables. The AAPM Task Group 43 formalism for dose calculation has been also applied. The dose rate constant obtained for the one bead source is Λ=1.113±0.003 cGyh −1 U −1 , and the value for the three bead source is Λ=1.103±0.003 cGyh −1 U −1 . Finally, for the treatment planning systems based on Sievert-type algorithms, the attenuation coefficients that best reproduce Monte Carlodose rate distribution are given.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-05-07 | Medical Physics |