Abstract
Abstract The use of high-energy electrons in cancer therapy has created a need for sensitive and accurate dosimetric techniques which are applicable to the measurement of electron beams. The most logical first step is to extend the use of ionisation chambers in order to measure high-energy photon and particulate beams. This article deals with a comparative study of chemical and ionisation systems. The method and results of an investigation to determine conversion factors for use with commercial ionisation instruments are reported. Some incidental findings in the use of ionisation chambers in electron dosimetry are also presented. Using a variable volume, parallel-electrode chamber, experimental evidence was obtained to substantiate the Bragg-Gray cavity nature of the thimble chambers used in routine clinical dosimetry. The conversion factors obtained for a Baldwin-Farmer and Victoreen instrument show good agreement with the theoretically calculated values. The electron dose conversion factors reported by ...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
