dc.contributor.author | Costa, F | |
dc.contributor.author | Doran, SJ | |
dc.contributor.author | Hanson, IM | |
dc.contributor.author | Nill, S | |
dc.contributor.author | Billas, I | |
dc.contributor.author | Shipley, D | |
dc.contributor.author | Duane, S | |
dc.contributor.author | Adamovics, J | |
dc.contributor.author | Oelfke, U | |
dc.date.accessioned | 2018-03-19T12:52:22Z | |
dc.date.issued | 2018-02-26 | |
dc.identifier.citation | Physics in medicine and biology, 2018, 63 (5), pp. 05NT01 - ? | |
dc.identifier.issn | 0031-9155 | |
dc.identifier.uri | https://repository.icr.ac.uk/handle/internal/1602 | |
dc.identifier.eissn | 1361-6560 | |
dc.identifier.doi | 10.1088/1361-6560/aaaca2 | |
dc.description.abstract | Dosimetric quality assurance (QA) of the new Elekta Unity (MR-linac) will differ from the QA performed of a conventional linac due to the constant magnetic field, which creates an electron return effect (ERE). In this work we aim to validate PRESAGE® dosimetry in a transverse magnetic field, and assess its use to validate the research version of the Monaco TPS of the MR-linac. Cylindrical samples of PRESAGE® 3D dosimeter separated by an air gap were irradiated with a cobalt-60 unit, while placed between the poles of an electromagnet at 0.5 T and 1.5 T. This set-up was simulated in EGSnrc/Cavity Monte Carlo (MC) code and relative dose distributions were compared with measurements using 1D and 2D gamma criteria of 3% and 1.5 mm. The irradiation conditions were adapted for the MR-linac and compared with Monaco TPS simulations. Measured and EGSnrc/Cavity simulated profiles showed good agreement with a gamma passing rate of 99.9% for 0.5 T and 99.8% for 1.5 T. Measurements on the MR-linac also compared well with Monaco TPS simulations, with a gamma passing rate of 98.4% at 1.5 T. Results demonstrated that PRESAGE® can accurately measure dose and detect the ERE, encouraging its use as a QA tool to validate the Monaco TPS of the MR-linac for clinically relevant dose distributions at tissue-air boundaries. | |
dc.format | Electronic | |
dc.format.extent | 05NT01 - ? | |
dc.language | eng | |
dc.language.iso | eng | |
dc.publisher | IOP PUBLISHING LTD | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0 | |
dc.subject | Humans | |
dc.subject | Radiotherapy Dosage | |
dc.subject | Radiotherapy Planning, Computer-Assisted | |
dc.subject | Monte Carlo Method | |
dc.subject | Phantoms, Imaging | |
dc.subject | Particle Accelerators | |
dc.subject | Gamma Rays | |
dc.subject | Magnetic Fields | |
dc.subject | Radiation Dosimeters | |
dc.title | Investigating the effect of a magnetic field on dose distributions at phantom-air interfaces using PRESAGE® 3D dosimeter and Monte Carlo simulations. | |
dc.type | Journal Article | |
dcterms.dateAccepted | 2018-02-02 | |
rioxxterms.versionofrecord | 10.1088/1361-6560/aaaca2 | |
rioxxterms.licenseref.uri | https://creativecommons.org/licenses/by/4.0 | |
rioxxterms.licenseref.startdate | 2018-02-26 | |
rioxxterms.type | Journal Article/Review | |
dc.relation.isPartOf | Physics in medicine and biology | |
pubs.issue | 5 | |
pubs.notes | No embargo | |
pubs.organisational-group | /ICR | |
pubs.organisational-group | /ICR/Primary Group | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Magnetic Resonance | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Radiotherapy Physics Modelling | |
pubs.organisational-group | /ICR | |
pubs.organisational-group | /ICR/Primary Group | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Magnetic Resonance | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Radiotherapy Physics Modelling | |
pubs.publication-status | Published | |
pubs.volume | 63 | |
pubs.embargo.terms | No embargo | |
icr.researchteam | Magnetic Resonance | |
icr.researchteam | Radiotherapy Physics Modelling | |
dc.contributor.icrauthor | Costa, Filipa | |
dc.contributor.icrauthor | Doran, Simon | |
dc.contributor.icrauthor | Nill, Simeon | |
dc.contributor.icrauthor | Billas, Ilias | |