Scatter from radiotherapy beams emerging from primary barriers : an aid to bunker design

Charts to assist in linear accelerator bunker design have been produced using the Monte Carlo framework, Geant4. These charts assess the amount of forward scatter produced at different angles to the beam axis by concrete and steel barriers irradiated by 6 MV and 10 MV photon beams at normal incidenc...

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Bibliographic Details
Published in:British journal of radiology 2006-11, Vol.79 (947), p.912-917
Main Authors: BENITO, D. C, MCKENZIE, A. L
Format: Article
Language:English
Subjects:
Biological and medical sciences
Equipment Design
Humans
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Particle Accelerators - instrumentation
Radiometry - instrumentation
Radiotherapy - instrumentation
Radiotherapy Dosage
Scattering, Radiation
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Summary:Charts to assist in linear accelerator bunker design have been produced using the Monte Carlo framework, Geant4. These charts assess the amount of forward scatter produced at different angles to the beam axis by concrete and steel barriers irradiated by 6 MV and 10 MV photon beams at normal incidence. These new charts complement existing charts of broad-beam transmission through walls. This is because the existing charts give no indication of the amount of scatter emerging at large angles from the beam axis, for example, towards the maze entrance.
ISSN:0007-1285
1748-880X
DOI:10.1259/bjr/94993761