Characterisation of Silicon Diode Arrays for Dosimetry in External Beam Radiation Therapy
| Autor: | Peter E Metcalfe, I. Fuduli, Michael L. F Lerch, Martin G Carolan, Matthew Newall, Marco Petasecca, Vladimir Perevertaylo, Dean L Cutajar, C Porumb, A. H. Aldosari, Anatoly B. Rosenfeld |
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| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Ion beam business.industry medicine.medical_treatment Dose profile Stereotactic radiation therapy Particle detector 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Nuclear Energy and Engineering 030220 oncology & carcinogenesis Radiation damage medicine Dosimetry Optoelectronics Irradiation Electrical and Electronic Engineering business Radiation hardening |
| Zdroj: | IEEE Transactions on Nuclear Science. 63:1808-1817 |
| ISSN: | 1558-1578 0018-9499 |
| DOI: | 10.1109/tns.2016.2567446 |
| Popis: | Modern stereotactic radiation therapy modalities utilize small beams and large dose gradients to deliver radiation in few fractions, reducing the possibility to correct for mistakes during the treatment process. Therefore, in order to ensure best possible treatment for the patient, quality assurance for such treatments necessitates a stable, linear, and sensitive radiation detector with high spatial resolution and radiation hardness. In this work, two silicon detector arrays with high spatial resolution have been characterized by 6 MV and 18 MV medical LINAC irradiation, and 5.5 MeV He2+ heavy ion microprobe. A maximum discrepancy of 0.6 mm in field size has been found when comparing to two-dimensional radiochromic film dose profile, and charge collection efficiency obtained by means of ion beam induced charge collection (IBICC) is 66% when operating the array in photovoltaic mode. Radiation damage study by photons and photoneutrons is presented. |
| Databáze: | OpenAIRE |
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