Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy

This paper describes the imaging performance of a high-field in-line MRI linear accelerator with a patient rotation system in-situ. Signal quality was quantified using signal-to-noise ratio (SNR) and RF uniformity maps. B0-field inhomogeneity was assessed using magnetic field mapping. SNR was evalua...

Descripción completa

Detalles Bibliográficos
Autores principales: Buckley, Jarryd G., Dong, Bin, Liney, Gary P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Technical Note
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807630/
https://www.ncbi.nlm.nih.gov/pubmed/33458355
http://dx.doi.org/10.1016/j.phro.2020.11.001
_version_ 1783636783019327488
author Buckley, Jarryd G.
Dong, Bin
Liney, Gary P.
author_facet Buckley, Jarryd G.
Dong, Bin
Liney, Gary P.
author_sort Buckley, Jarryd G.
collection PubMed
description This paper describes the imaging performance of a high-field in-line MRI linear accelerator with a patient rotation system in-situ. Signal quality was quantified using signal-to-noise ratio (SNR) and RF uniformity maps. B0-field inhomogeneity was assessed using magnetic field mapping. SNR was evaluated with various entries into the Faraday cage which were required for extended couch translations. SNR varied between 103 and 87 across PRS rotation angles. Maximum B0-field inhomogeneity corresponded to 0.7 mm of geometric distortion. A 45 × 55 cm(2) aperture allowed PRS translation with no reduction in SNR. Imaging performance with the PRS in-situ was found to be acceptable.
format Online
Article
Text
id pubmed-7807630
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-78076302021-01-14 Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy Buckley, Jarryd G. Dong, Bin Liney, Gary P. Phys Imaging Radiat Oncol Technical Note This paper describes the imaging performance of a high-field in-line MRI linear accelerator with a patient rotation system in-situ. Signal quality was quantified using signal-to-noise ratio (SNR) and RF uniformity maps. B0-field inhomogeneity was assessed using magnetic field mapping. SNR was evaluated with various entries into the Faraday cage which were required for extended couch translations. SNR varied between 103 and 87 across PRS rotation angles. Maximum B0-field inhomogeneity corresponded to 0.7 mm of geometric distortion. A 45 × 55 cm(2) aperture allowed PRS translation with no reduction in SNR. Imaging performance with the PRS in-situ was found to be acceptable. Elsevier 2020-11-18 /pmc/articles/PMC7807630/ /pubmed/33458355 http://dx.doi.org/10.1016/j.phro.2020.11.001 Text en © 2020 The Author(s) http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Technical Note
Buckley, Jarryd G.
Dong, Bin
Liney, Gary P.
Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
title Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
title_full Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
title_fullStr Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
title_full_unstemmed Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
title_short Imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
title_sort imaging performance of a high-field in-line magnetic resonance imaging linear accelerator with a patient rotation system for fixed-gantry radiotherapy
topic Technical Note
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807630/
https://www.ncbi.nlm.nih.gov/pubmed/33458355
http://dx.doi.org/10.1016/j.phro.2020.11.001
work_keys_str_mv AT buckleyjarrydg imagingperformanceofahighfieldinlinemagneticresonanceimaginglinearacceleratorwithapatientrotationsystemforfixedgantryradiotherapy
AT dongbin imagingperformanceofahighfieldinlinemagneticresonanceimaginglinearacceleratorwithapatientrotationsystemforfixedgantryradiotherapy
AT lineygaryp imagingperformanceofahighfieldinlinemagneticresonanceimaginglinearacceleratorwithapatientrotationsystemforfixedgantryradiotherapy

Ejemplares similares