Beam profiles along the nonwedged direction for large wedged fields Journal Article
| Authors: | Chui, C. S.; LoSasso, T. |
| Article Title: | Beam profiles along the nonwedged direction for large wedged fields |
| Abstract: | Beam profiles along the nonwedged direction of a wedged field produced by a linear accelerator exhibit more “sagging” than that of an open field at the same depth. For large fields, the profiles of open and wedged fields can differ by as much as 1%, The extra “sagging” of wedged profiles is mainly due to the difference in penetration between on- and off-axis rays caused by the variation of beam quality across the field. An algorithm was developed to estimate an “effective” depth such that the profile of a wedged field can be approximated by the open-field profile at the effective depth. The algorithm was verified by measured beam profiles for 6- and 15-MV x-ray beams for 15°, 30°, 45°, and 60° wedges. © 1994, American Association of Physicists in Medicine. All rights reserved. |
| Keywords: | treatment planning; algorithm; radiation beam; radiation field; linear accelerator; radiation scattering; radiation depth dose; priority journal; article; treatment planning algorithm; wedge profiles |
| Journal Title: | Medical Physics |
| Volume: | 21 |
| Issue: | 11 |
| ISSN: | 0094-2405 |
| Publisher: | American Association of Physicists in Medicine |
| Date Published: | 1994-11-01 |
| Start Page: | 1685 |
| End Page: | 1690 |
| Language: | English |
| DOI: | 10.1118/1.597282 |
| PROVIDER: | scopus |
| PUBMED: | 7891628 |
| DOI/URL: | |
| Notes: | Export Date: 14 January 2019 -- Article -- Source: Scopus |
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