Austin Health

Title
Use of magnetic resonance image-guided radiotherapy for breast cancer: a scoping review.
Publication Date
2022-03
Author(s)
Berlangieri, Alexandra
Elliott, Sarah
Wasiak, Jason
Chao, Michael
Foroudi, Farshad
Subject
Accelerated partial breast irradiation
MR simulation
MR-linac
MRI guided radiotherapy
breast cancer
electron return effect
Type of document
Journal Article
OrcId
0000-0003-0795-1995
0000-0002-7500-8483
0000-0001-8387-0965
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
DOI
10.1002/jmrs.545
Abstract
In recent years, we have seen the integration of magnetic resonance imaging (MRI) simulators into radiotherapy centres and the emergence MR linear accelerators (MR-linac). Currently, there are limited studies to demonstrate the clinical effectiveness of MRI guided radiotherapy (MRIgRT) treatment for breast cancer patients. The objective of this scoping review was to identify and map the existing evidence surrounding the clinical implementation of MRIgRT for breast cancer patients. We also identified the challenges and knowledge gaps in the literature. The scoping review was reported in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) extension for Scoping Reviews reporting guidelines. Titles and abstracts were screened by two independent reviewers. Quantitative and qualitative data were extracted and summarised using thematically organised tables. Results identify that accelerated partial breast irradiation (APBI) is the most common form of treatment for MRIgRT. The presence of the magnet does not affect target coverage or violate organ at risk (OAR) constraints compared to standard radiotherapy methods. Consideration is advised for skin and chest wall (CW) due to the electron return effect (ERE) and areas such as armpit and chin due to the electron stream effect (ESE). Clinically, bolus has been used to protect and prevent unwanted dose in these areas. Overall treatment for APBI on the MR-linac is feasible.
Link
Citation
Journal of medical radiation sciences 2022-03; 69(1): 122-133
Jornal Title
Journal of Medical Radiation Sciences

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