 |
Journal articles
Out-of-field dose measurements in radiotherapy – An overview of activity of EURADOS Working Group 9: Radiation protection in medicine
Abstract : This review of dosimetry for second cancer risk estimation introduces work carried out by Working Group 9 (WG9: Radiation Protection Dosimetry in Medicine) of the European Radiation Dosimetry Group (EURADOS). The work concentrates on the measurement of out-of-field doses in water phantoms using a variety of dosimeters to measure photon and neutron doses. These include optically stimulated luminescence (OSL), radiophotoluminescence (RPL) and thermoluminescence (TLD) dosimeters for photon dosimetry (together with ion chambers for reference measurements) and track etch and superheated emulsion detectors for neutron measurements. The motivation of WG 9 was to assess undue, non-target patient doses in radiotherapy and the related risks of second malignancy. Improvements in cancer treatment have increased survival times and thus increased incidence of second cancer may be expected in the future. In addition, increased whole body exposure may result from some developments in radiotherapy. This means that radiotherapy clinics will need to simulate their treatments in order to estimate and minimise doses to healthy tissues and organs. The proposed work is designed to generate a robust dataset of out-of-field dose measurements which can be used for the development and validation of dose algorithms.
Highlights:
• Photon dosimeters used (TLD, OSL and RPL) are suitable for out-of-field dosimetry.
• Superheated emulsions and Track etch PADC detectors were used for neutron dosimetry.
• Neutron detectors used are suitable for out-of-field neutron dosimetry.
• Peripheral doses for the same PTV can vary by a factor of 4 for various modalities.
• Results revealed that the TPS used regularly underestimated out-of-field doses
Keywords :
Tomotherapy
VMAT
IMRT
Track etch PADC detectors
Superheated emulsion detectors
OSL
TLD
RPL
Out-of-field doses in radiotherapy
Measuring Instruments
Medicine
Mockup
Nuclear Medicine
Radiology
Radiation Dtectors
Photon Emission
Radiotherapy
Structural Models
Therapy
Tomography
CT-Guided Radiotherapy
Computerized Tomography
Emulsions
Neutron Detectors
Neutron Dosimetyry
Organs donation
Phantoms
Particle Tracks
Radiation Doses
Thermoluminescence
Radiation Protection
Thermoluminescent Dosemeters
Diagnostic Techniques
Colloids
Body
Dispersions
Dosemeters
Doses
Dosimetry
Luminescence Dosemeters
Luminescence
Emission
https://hal-cea.archives-ouvertes.fr/cea-01841833
Contributor : Marie-France Robbe <>
Submitted on : Tuesday, July 17, 2018 - 3:32:13 PM
Last modification on : Tuesday, November 24, 2020 - 3:32:05 PM
Contributor : Marie-France Robbe <>
Submitted on : Tuesday, July 17, 2018 - 3:32:13 PM
Last modification on : Tuesday, November 24, 2020 - 3:32:05 PM