Journal Article

DKFZ-2020-01137

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Reference dosimetry in MRI-linacs: evaluation of available protocols and data to establish a code of practice.

de Pooter, J. A. ; Billas, I. ; de Prez, L. A. ; Duane, S. ; Kapsch, R.-P. ; Karger, C.DKFZ* ; van Asselen, B. ; Wolthaus, J. W. H.

2021
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-6560/ab9efe

Abstract: With the rapid increase in clinical treatments with MRI-linacs, a consistent, harmonized and sustainable ground for reference dosimetry in MRI-linacs is needed. Specific for reference dosimetry in MRI-linacs is the presence of a strong magnetic field. Therefore, existing Code of Practices (CoPs) are inadequate. In recent years, a vast amount of papers has been published in relation to this topic. The purpose of this review paper is twofold: to give an overview and evaluate the existing literature for reference dosimetry in MRI-linacs and to discuss whether this literature and datasets are adequate and complete to serve as basis for the development of a new or to extend existing CoPs. This review is prefaced with an overview of existing MRI-linac facilities. Then an introduction on the physics of radiation transport in magnetic fields is given. The main part of the review is devoted to the evaluation of the literature with respect to the following subjects: • beam characteristics of MRI-linac facilities; • formalisms for reference dosimetry in MRI-linacs; • characteristics of ionization chambers in the presence of magnetic fields; • ionization chamber beam quality correction factors; • ionization chamber magnetic field correction factors. The review is completed with a discussion whether the existing literature is adequate to serve as basis for a CoP. In addition, it highlights subjects for future research on this topic.

Note: 2021 Mar 1;66(5):05TR02

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Contributing Institute(s):

1. E040 Med. Physik in der Strahlentherapie (E040)

Research Program(s):

1. 315 - Bildgebung und Radioonkologie (POF4-315) (POF4-315)

Appears in the scientific report 2021

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Database coverage:
; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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