The isocentric fast neutron therapy facility at Edinburgh

The British Journal of Radiology
D E BonnettC J Parnell

Abstract

A second fast neutron beam for radiotherapy has been brought into operation at the Western General Hospital, Edinburgh. This beam is isocentrically mounted and can be rotated through +/- 120 deg from the vertical. Neutrons are produced by bombarding a thick beryllium target with 15 MeV deuterons. The provision of an isocentric facility enables some of the problems associated with poor beam penetration to be alleviated. The physical features of the isocentric facility are described with particular reference to the shielding and the methods employed to overcome problems of neutron activation. Both the prompt radiation leakage and the induced activity have been measured. It has been found that for the first eight months of operation the whole body dose-equivalent to radiographers was approximately 6 microSv (0.6 mrem) per patient treated. Dosimetry associated with the facility is discussed and an example of a seven field treatment plan for a bladder is presented.

References

Mar 1, 1979·The British Journal of Radiology·J R WilliamsC J Parnell
May 1, 1978·The British Journal of Radiology·D K Bewley, B C Page

Citations

Apr 1, 1992·The British Journal of Radiology·J Finch, D E Bonnett
Sep 1, 1983·The British Journal of Radiology·D E Bonnett
Jan 1, 1988·The British Journal of Radiology·D E BonnettD K Bewley
Feb 1, 1987·International Journal of Radiation Oncology, Biology, Physics·W DuncanJ R Williams
Mar 1, 1987·American Heart Journal·J A LopezR J Siegel
Aug 1, 1983·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·A BrahmeP Wootton
Mar 29, 2008·Physics in Medicine and Biology·Phillip J TaddeiWayne D Newhauser
Apr 1, 1984·Physics in Medicine and Biology·D K BewleyB C Page

Related Concepts

Malignant Neoplasm of Urinary Bladder
Dose-Response Relationship, Radiation
Fast Neutrons
Neutrons
Gray Units
Radiation Protection
Radiotherapy Dosage
Radiotherapy, Megavolt

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