Search results for "Sievert integral"

showing 3 items of 3 documents

A monte carlo study of dose rate distribution around the specially asymmetric CSM3-a 137Cs source.

2001

The CSM3 137Cs type stainless-steel encapsulated source is widely used in manually afterloaded low dose rate brachytherapy. A specially asymmetric source, CSM3-a, has been designed by CIS Bio International (France) substituting the eyelet side seed with an inactive material in the CSM3 source. This modification has been done in order to allow a uniform dose level over the upper vaginal surface when this `linear' source is inserted at the top of the dome vaginal applicators. In this study the Monte Carlo GEANT3 simulation code, incorporating the source geometry in detail, was used to investigate the dosimetric characteristics of this special CSM3-a 137Cs brachytherapy source. The absolute do…

Materials scienceRadiological and Ultrasound Technologybusiness.industryRadioactive sourceRadiotherapy Planning Computer-AssistedMonte Carlo methodBrachytherapyDose levelSievert integralLow-Dose Rate BrachytherapyComputational physicsDistribution (mathematics)Cesium RadioisotopesNeoplasmsVaginaDosimetryHumansRadiology Nuclear Medicine and imagingFemaleDose rateNuclear medicinebusinessRadiometryMonte Carlo MethodAlgorithmsPhysics in medicine and biology
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Monte Carlo calculation of dose rate distributions around the Walstam CDC.K-type137Cs sources

2001

Basic dosimetric data for the Walstam CDC.K-type low dose rate 137Cs sources in water have been calculated using Monte Carlo techniques. These sources, CDC.K1 -K3 and CDC.K4, are widely used in a range of applicators and moulds for the treatment of intracavitary and superficial cancers. Our purpose is to improve existing data about these sources using the Monte Carlo simulation code GEANT3. Absolute dose rate distributions in water have been calculated around these sources and are presented as conventional 2D Cartesian look-up tables. Also the AAPM Task Group 43 formalism for dose calculation has been applied. The calculated dose rate constant for the CDC.K1-K3 source is A = 1.106 +/- 0.001…

PhysicsPolynomial regressionModels StatisticalRadiological and Ultrasound TechnologyRadiotherapy Planning Computer-AssistedMonte Carlo methodSievert integrallaw.inventionComputational physicsCesium RadioisotopeslawAnisotropyHumansDosimetryRadiology Nuclear Medicine and imagingCartesian coordinate systemStatistical physicsLow dose rateRadiometryDose rateAnisotropyMonte Carlo MethodAlgorithmsSoftwarePhysics in Medicine and Biology
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A Monte Carlo investigation of the dosimetric characteristics of the CSM11 137Cs source from CIS

2000

The purpose of this study is to calculate basic dosimetry data for a CSM11 low dose rate 137Cs source in water. This source is widely used in afterloadable dome cylinders designed to homogeneously irradiate the vaginal cuff alone or additional areas of the vagina in hysterectomized patients. In this study, the Monte Carlo simulation code GEANT, incorporating in detail source geometry, is used to investigate the dosimetric characteristics of the source. The calculated data were analyzed using a fitting procedure that is described in detail. Absolute dose rate distributions in water were calculated around this source and are presented as conventional 2D Cartesian lookup tables (classically al…

Physicsbusiness.industryAirRadiotherapy Planning Computer-AssistedAttenuationmedicine.medical_treatmentMonte Carlo methodBrachytherapyIsotropyWaterGeneral MedicineSievert integralComputational physicsCesium RadioisotopesLookup tablemedicineHumansDosimetryRadiometryAnisotropyNuclear medicinebusinessMonte Carlo MethodMedical Physics
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