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Evaluation of a Belly Board immobilisation device for rectal cancer patients receiving pre-operative chemoradiation

Published online by Cambridge University Press:  11 August 2014

Andrew Gaya ,
Patryk Brulinski ,
Stephen L. Morris ,
Kim A. Ball ,
Anthony G. Greener ,
Sue Corcoran ,
Anthony Henrys ,
David B. Landau ,
George Mikhaeel  and
Martin D. Leslie
...Show all authors
Andrew Gaya*
Affiliation:
Department of Clinical Oncology
Patryk Brulinski
Affiliation:
Department of Clinical Oncology
Stephen L. Morris
Affiliation:
Department of Clinical Oncology
Kim A. Ball
Affiliation:
Department of Radiotherapy
Anthony G. Greener
Affiliation:
Department of Medical Physics, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
Sue Corcoran
Affiliation:
Department of Medical Physics, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
Anthony Henrys
Affiliation:
Department of Radiotherapy
David B. Landau
Affiliation:
Department of Clinical Oncology
George Mikhaeel
Affiliation:
Department of Clinical Oncology
Martin D. Leslie
Affiliation:
Department of Clinical Oncology
Anna Z. Winship
Affiliation:
Department of Clinical Oncology
*
Correspondence to: Dr Andrew Gaya, Department of Clinical Oncology, Guy’s and St Thomas’ NHS Foundation Trust, Westminster Bridge Road, London SE1 7EH, UK. Tel: +44 (0) 20 7188 1459. Fax: +44 (0) 20 7009 4272. E-mail: [email protected]
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Abstract

Purpose

To evaluate the efficacy of a Belly Board immobilisation device for rectal cancer patients.

Materials and methods

A randomised trial in patients receiving neo-adjuvant chemoradiation for rectal carcinoma was established. Patients were treated, prone with control arm, according to standard departmental protocol and experimental arm with the use of a Belly Board. All treatments were planned using a three-field technique. The primary endpoints were reproducibility and irradiated small bowel volume. Questionnaires were used to assess secondary endpoints of patient comfort, ease of set-up and acute toxicities.

Results

Pre-planned interim analysis was performed after recruiting 30 patients. In all, 348 portal images were analysed retrospectively. Around 8 out of 12 parameters measuring set-up reproducibility were in favour of the Belly Board arm. Random error in the anterior–posterior direction was improved and statistically significant in the experimental arm (95% CI; p≤0·05). Small bowel V15 was significantly lower in the Belly Board position (mean V15=14·5%) compared with the standard position (mean V15=21·4%), paired t-test 95% CI; p=0·035. Also, patients’ comfort satisfaction was greater in the Belly Board arm.

Conclusions

Set-up reproducibility, small bowel V15, patient comfort and satisfaction were all significantly improved by the use of the Belly Board.

Keywords

Belly Board immobilisationradiotherapyrectal cancerset-up reproducibilitysmall bowel toxicity
Type
Original Articles
Information
Journal of Radiotherapy in Practice , Volume 13 , Supplement 4 , December 2014 , pp. 403 - 409
Copyright
© Cambridge University Press 2014 

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