Investigations on the near surface dose for three 10‐MV x‐ray beam accelerators with emphasis on the reduction of electron contamination
- 1 March 1988
- journal article
- research article
- Published by Wiley in Medical Physics
- Vol. 15 (2) , 246-249
- https://doi.org/10.1118/1.596256
Abstract
A study of three 10‐MV x‐ray clinical accelerators with emphasis on the reduction of electron contamination was conducted. This study, which was performed with different types of trays and filters, suggests that, at 100‐cm source–surface distance (SSD), Pb can be used as an effective filter material up to 30×30 cm2; however, due to its transparency, a Clear‐Pb tray is useful for field sizes up to a 20×20 cm2. Percent depth doses for a few selected depths and field sizes at this nominal SSD were examined. No significant differences, with the exception of the location of Dmax, amongst the three accelerators were noticed.Funding Information
- Siemens USA
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