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Development and characterization of optical readout well-type glass gas electron multiplier for dose imaging in clinical carbon beams.
- Source :
-
Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) [Phys Med] 2021 Feb; Vol. 82, pp. 72-78. Date of Electronic Publication: 2021 Feb 13. - Publication Year :
- 2021
-
Abstract
- The use of carbon ion beams in cancer therapy (also known as hadron therapy) is steadily growing worldwide; therefore, the demand for more efficient dosimetry systems is also increasing because daily quality assurance (QA) measurements of hadron radiotherapy is one of the most complex and time consuming tasks. The aim of this study is to develop a two-dimensional dosimetry system that offers high spatial resolution, a large field of view, quick data response, and a linear dose-response relationship. We demonstrate the dose imaging performance of a novel digital dose imager using carbon ion beams for hadron therapy. The dose imager is based on a newly-developed gaseous detector, a well-type glass gas electron multiplier. The imager is successfully operated in a hadron therapy facility with clinical intensity beams for radiotherapy. It features a high spatial resolution of less than 1 mm and an almost linear dose-response relationship with no saturation and very low linear-energy-transfer dependence. Experimental results show that the dose imager has the potential to improve dosimetry accuracy for daily QA.<br /> (Copyright © 2021 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.)
- Subjects :
- Gases
Linear Energy Transfer
Radiometry
Carbon
Electrons
Subjects
Details
- Language :
- English
- ISSN :
- 1724-191X
- Volume :
- 82
- Database :
- MEDLINE
- Journal :
- Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)
- Publication Type :
- Academic Journal
- Accession number :
- 33588230
- Full Text :
- https://doi.org/10.1016/j.ejmp.2021.01.068