Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector
High-energy small electron beams, generated by linear accelerators, are used for radiotherapy of localized superficial tumours. The aim of the present study is to assess the dosimetric performance under small radiation therapy electron beams of the novel PTW microSilicon detector compared to other a...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/2/600 |
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| author | Serenella Russo Silvia Bettarini Barbara Grilli Leonulli Marco Esposito Paolo Alpi Alessandro Ghirelli Raffaella Barca Simona Fondelli Lisa Paoletti Silvia Pini Silvia Scoccianti |
| author_facet | Serenella Russo Silvia Bettarini Barbara Grilli Leonulli Marco Esposito Paolo Alpi Alessandro Ghirelli Raffaella Barca Simona Fondelli Lisa Paoletti Silvia Pini Silvia Scoccianti |
| author_sort | Serenella Russo |
| collection | DOAJ |
| description | High-energy small electron beams, generated by linear accelerators, are used for radiotherapy of localized superficial tumours. The aim of the present study is to assess the dosimetric performance under small radiation therapy electron beams of the novel PTW microSilicon detector compared to other available dosimeters. Relative dose measurements of circular fields with 20, 30, 40, and 50 mm aperture diameters were performed for electron beams generated by an Elekta Synergy linac, with energy between 4 and 12 MeV. Percentage depth dose, transverse profiles, and output factors, normalized to the 10 × 10 cm<sup>2</sup> reference field, were measured. All dosimetric data were collected in a PTW MP3 motorized water phantom, at SSD of 100 cm, by using the novel PTW microSilicon detector. The PTW diode E and the PTW microDiamond were also used in all beam apertures for benchmarking. Data for the biggest field size were also measured by the PTW Advanced Markus ionization chamber. Measurements performed by the microSilicon are in good agreement with the reference values for all the tubular applicators and beam energies within the stated uncertainties. This confirms the reliability of the microSilicon detector for relative dosimetry of small radiation therapy electron beams collimated by circular applicators. |
| first_indexed | 2024-03-10T03:00:15Z |
| format | Article |
| id | doaj.art-de12cf92acbe4273bb63070ad18260dd |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T03:00:15Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-de12cf92acbe4273bb63070ad18260dd2023-11-23T12:49:43ZengMDPI AGApplied Sciences2076-34172022-01-0112260010.3390/app12020600Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon DetectorSerenella Russo0Silvia Bettarini1Barbara Grilli Leonulli2Marco Esposito3Paolo Alpi4Alessandro Ghirelli5Raffaella Barca6Simona Fondelli7Lisa Paoletti8Silvia Pini9Silvia Scoccianti10Medical Physics Unit, Azienda USL Toscana Centro, 50012 Florence, ItalySpecialization School in Medical Physics, University of Florence, 50133 Florence, ItalyRadiotherapy Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyMedical Physics Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyRadiotherapy Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyMedical Physics Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyRadiotherapy Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyRadiotherapy Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyRadiotherapy Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyMedical Physics Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyRadiotherapy Unit, Azienda USL Toscana Centro, 50012 Florence, ItalyHigh-energy small electron beams, generated by linear accelerators, are used for radiotherapy of localized superficial tumours. The aim of the present study is to assess the dosimetric performance under small radiation therapy electron beams of the novel PTW microSilicon detector compared to other available dosimeters. Relative dose measurements of circular fields with 20, 30, 40, and 50 mm aperture diameters were performed for electron beams generated by an Elekta Synergy linac, with energy between 4 and 12 MeV. Percentage depth dose, transverse profiles, and output factors, normalized to the 10 × 10 cm<sup>2</sup> reference field, were measured. All dosimetric data were collected in a PTW MP3 motorized water phantom, at SSD of 100 cm, by using the novel PTW microSilicon detector. The PTW diode E and the PTW microDiamond were also used in all beam apertures for benchmarking. Data for the biggest field size were also measured by the PTW Advanced Markus ionization chamber. Measurements performed by the microSilicon are in good agreement with the reference values for all the tubular applicators and beam energies within the stated uncertainties. This confirms the reliability of the microSilicon detector for relative dosimetry of small radiation therapy electron beams collimated by circular applicators.https://www.mdpi.com/2076-3417/12/2/600radiotherapy electron beamsoutput factorstubular applicatorsolid-state detector |
| spellingShingle | Serenella Russo Silvia Bettarini Barbara Grilli Leonulli Marco Esposito Paolo Alpi Alessandro Ghirelli Raffaella Barca Simona Fondelli Lisa Paoletti Silvia Pini Silvia Scoccianti Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector Applied Sciences radiotherapy electron beams output factors tubular applicator solid-state detector |
| title | Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector |
| title_full | Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector |
| title_fullStr | Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector |
| title_full_unstemmed | Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector |
| title_short | Dosimetric Characterization of Small Radiotherapy Electron Beams Collimated by Circular Applicators with the New Microsilicon Detector |
| title_sort | dosimetric characterization of small radiotherapy electron beams collimated by circular applicators with the new microsilicon detector |
| topic | radiotherapy electron beams output factors tubular applicator solid-state detector |
| url | https://www.mdpi.com/2076-3417/12/2/600 |
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