Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software
<p>This work is a report on the commissioning of low energy electron beams of a medical linear accelerator for Monte Carlo dose calculation using NXEGS software (NXEGS version 1.0.10.0, NX Medical Software, LLC). A unique feature of NXEGS is automated commissioning, a process whereby a combina...
| Format: | Article |
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| Language: | English |
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Ivyspring International Publisher
2004-06-01
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| Series: | International Journal of Medical Sciences |
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| Online Access: | http://www.medsci.org/v01p0063.htm |
| _version_ | 1818473533791010816 |
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| collection | DOAJ |
| description | <p>This work is a report on the commissioning of low energy electron beams of a medical linear accelerator for Monte Carlo dose calculation using NXEGS software (NXEGS version 1.0.10.0, NX Medical Software, LLC). A unique feature of NXEGS is automated commissioning, a process whereby a combination of analytic and Monte Carlo methods generates beam models from dosimetric data collected in a water phantom. This study uses NXEGS to commission 6, 9, and 12 MeV electron beams of a Varian Clinac 2100C using three applicators with standard inserts. Central axis depth-dose, primary axis and diagonal beam profiles, and output factors are the measurements necessary for commissioning of the code. We present a comparison of measured dose distributions with the distributions generated by NXEGS, using confidence limits on seven measures of error. We find that confidence limits are typically less than 3% or 3 mm, but increase with increasing source to surface distance (SSD) and depth at or beyond R<sub>50</sub>. We also investigate the dependence of NXEGS' performance on the size and composition of data used to commission the program, finding a weak dependence on number of dose profiles in the data set, but finding also that commissioning data need be measured at only two SSDs.</p> |
| first_indexed | 2024-04-14T04:25:03Z |
| format | Article |
| id | doaj.art-40258da57eb44445a87401a425c73d1d |
| institution | Directory Open Access Journal |
| issn | 1449-1907 |
| language | English |
| last_indexed | 2024-04-14T04:25:03Z |
| publishDate | 2004-06-01 |
| publisher | Ivyspring International Publisher |
| record_format | Article |
| series | International Journal of Medical Sciences |
| spelling | doaj.art-40258da57eb44445a87401a425c73d1d2022-12-22T02:12:22ZengIvyspring International PublisherInternational Journal of Medical Sciences1449-19072004-06-01126375Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software<p>This work is a report on the commissioning of low energy electron beams of a medical linear accelerator for Monte Carlo dose calculation using NXEGS software (NXEGS version 1.0.10.0, NX Medical Software, LLC). A unique feature of NXEGS is automated commissioning, a process whereby a combination of analytic and Monte Carlo methods generates beam models from dosimetric data collected in a water phantom. This study uses NXEGS to commission 6, 9, and 12 MeV electron beams of a Varian Clinac 2100C using three applicators with standard inserts. Central axis depth-dose, primary axis and diagonal beam profiles, and output factors are the measurements necessary for commissioning of the code. We present a comparison of measured dose distributions with the distributions generated by NXEGS, using confidence limits on seven measures of error. We find that confidence limits are typically less than 3% or 3 mm, but increase with increasing source to surface distance (SSD) and depth at or beyond R<sub>50</sub>. We also investigate the dependence of NXEGS' performance on the size and composition of data used to commission the program, finding a weak dependence on number of dose profiles in the data set, but finding also that commissioning data need be measured at only two SSDs.</p>http://www.medsci.org/v01p0063.htmMonte Carloelectron beam commissioningNXEGS |
| spellingShingle | Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software International Journal of Medical Sciences Monte Carlo electron beam commissioning NXEGS |
| title | Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software |
| title_full | Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software |
| title_fullStr | Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software |
| title_full_unstemmed | Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software |
| title_short | Monte Carlo Commissioning of Low Energy Electron Radiotherapy Beams using NXEGS Software |
| title_sort | monte carlo commissioning of low energy electron radiotherapy beams using nxegs software |
| topic | Monte Carlo electron beam commissioning NXEGS |
| url | http://www.medsci.org/v01p0063.htm |