Simon J P Meara and Keith A Langmack 1998 Phys. Med. Biol. 43 1359 doi:10.1088/0031-9155/43/5/025
Simon J P Meara and Keith A Langmack
Show affiliationsProperties 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.
Issue 5 (May 1998)
Received 13 August 1997, in final form 8 December 1997
Simon J P Meara and Keith A Langmack 1998 Phys. Med. Biol. 43 1359
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