An investigation into the use of carbon fibre for megavoltage radiotherapy applications

Properties of carbon fibre of relevance to its use for megavoltage radiotherapy applications have been investigated. Measurements have been made of the percentage transmission and percentage build-up of carbon fibre at energies of 5, 6 and 8 MV. The results are presented in comparison with those obt...

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Bibliographic Details
Published in:Physics in medicine & biology 1998-05, Vol.43 (5), p.1359-1366
Main Authors: Meara, Simon J P, Langmack, Keith A
Format: Article
Language:English
Subjects:
Biological and medical sciences
Calibration
Carbon
Equipment Design
Medical sciences
Polymethyl Methacrylate
Polystyrenes
Radiotherapy Dosage
Radiotherapy, High-Energy - instrumentation
Radiotherapy, High-Energy - methods
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Technology. Biomaterials. Equipments. Material. Instrumentation
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Summary:Properties of carbon fibre of relevance to its use for megavoltage radiotherapy applications have been investigated. Measurements have been made of the percentage transmission and percentage build-up of carbon fibre at energies of 5, 6 and 8 MV. The results are presented in comparison with those obtained for other materials commonly used in radiotherapy: polymethylmethacrylate (PMMA), PETG copolyester and expanded polystyrene foam. It was found that carbon fibre has a higher percentage transmission and a lower percentage build-up than either PMMA or PETG copolyester. It was also found that the build-up due to a combination of carbon fibre and 5 cm of polystyrene foam was less than 65% over the energy range for which measurements were made, and much lower than that due to PETG copolyester. It is thus proposed that carbon fibre is a suitable material from which to make devices for use in megavoltage radiotherapy.
ISSN:0031-9155
1361-6560
DOI:10.1088/0031-9155/43/5/025