Dosimetry in the presence of strong magnetic fields
| Autor: | N. Schupp, D. J. O'Brien, J. Dolan, Gabriel O. Sawakuchi, S. Pencea |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
History Physics::Instrumentation and Detectors Physics::Medical Physics Detector Dose distribution Radiation equipment and supplies Secondary electrons 030218 nuclear medicine & medical imaging Computer Science Applications Education Computational physics Magnetic field 03 medical and health sciences symbols.namesake 0302 clinical medicine 030220 oncology & carcinogenesis Ionization symbols Dosimetry Lorentz force |
| Zdroj: | Journal of Physics: Conference Series. 847:012055 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/847/1/012055 |
| Popis: | Magnetic resonance imaging–guided radiotherapy (MRIgRT) is an emerging technology that requires the use of radiation fields in the presence of magnetic (B) fields. In the presence of B-fields the Lorentz force influences the trajectories of the secondary electrons, which in turn affects both the dose distribution in water and the dose-response of ionization chambers and several other detectors. Thus, dosimetry in the presence of a B-field requires understanding both the B-field effects on the dose distribution and the response of detectors. In this paper we present measured data to show effects of the B-field on the dose distributions, response of ionization chambers, and presence of air-gaps surrounding the sensitive volume of the detector. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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