TY  - JOUR
AU  - de Pooter, Jacco A
AU  - Billas, Ilias
AU  - de Prez, Leon Armand
AU  - Duane, Simon
AU  - Kapsch, Ralf-Peter
AU  - Karger, Christian
AU  - van Asselen, Bram
AU  - Wolthaus, Jochem W H
TI  - Reference dosimetry in MRI-linacs: evaluation of available protocols and data to establish a code of practice.
JO  - Physics in medicine and biology
VL  - 66
IS  - 5
SN  - 1361-6560
CY  - Bristol
PB  - IOP Publ.
M1  - DKFZ-2020-01137
SP  - 05TR02
PY  - 2021
N1  - 2021 Mar 1;66(5):05TR02
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - pmid:32570225
DO  - DOI:10.1088/1361-6560/ab9efe
UR  - https://inrepo02.dkfz.de/record/156820
ER  -