Patterns of the use of advanced radiation therapy techniques for the management of bone metastases and the associated factors in Victoria.
Authors
Tacey, Mark
McCorkell, Giulia
Kok, David
Hornby, Colin
Milne, Roger L
Millar, Jeremy
Publication Date
2022-08Journal Title
J Med Imaging Radiat Oncol
ISSN
1754-9477
Publisher
Wiley
Language
en
Type
Article
This Version
AO
VoR
Metadata
Show full item recordCitation
Fogarty, T., Tacey, M., McCorkell, G., Kok, D., Hornby, C., Milne, R. L., Millar, J., et al. (2022). Patterns of the use of advanced radiation therapy techniques for the management of bone metastases and the associated factors in Victoria.. J Med Imaging Radiat Oncol https://doi.org/10.1111/1754-9485.13381
Abstract
INTRODUCTION: To describe the pattern of the use of advanced radiation therapy (RT) techniques, including intensity-modulated RT (IMRT), volumetric modulated arc therapy (VMAT), and stereotactic body RT (SBRT) for the management of bone metastases (BM), and the associated factors in Victoria. METHODS: We used a population-based cohort of patients from the state-wide Victorian Radiotherapy Minimum Data Set (VRMDS) who received RT for BM between 2012 and 2017. The primary outcome was proportion of RT courses using advanced RT techniques. The Cochran-Armitage test for trend was used to evaluate temporal trend in advanced RT use. Multinomial logistic regression was used to identify factors associated with advanced RT use. RESULTS: A total of 18,158 courses of RT were delivered to 10,956 patients-16,626 (91.6%) courses were 3D conformal RT, 857 (4.7%) IMRT/VMAT and 675 (3.7%) SBRT. There was a sharp increase in IMRT/VMAT use from <1% in 2012-2015, to 10.1% in 2016 and 16.3% in 2017 (P-trend < 0.001). Increase in SBRT use was more gradual, from 1.2% in 2012 to 4.8% in 2016 and 5.5% in 2017 for SBRT (P-trend<0.001). In multivariate analyses, year of RT was the strongest predictor of IMRT/VMAT use (OR = 41; 95%CI = 25-67; P < 0.001, comparing 2012-2013 and 2016-2017). Primary tumour type (prostate cancer) was the strongest predictor of SBRT use (OR = 6.07; 95% CI = 4.19-8.80; P < 0.001). CONCLUSION: Overall, there was increasing trend in the use of advanced RT techniques for BM in Victoria, with a distinct pattern for IMRT/VMAT compared with SBRT - SBRT uptake was more gradual while IMRT/VMAT uptake was abrupt, occurring contemporaneously with Medicare Benefit Scheme funding changes in 2016.
Keywords
Radiation Oncology‐Original Article, Radiation Oncology‐Original Articles, bone metastases, IMRT, radiation therapy, stereotactic, VMAT
Identifiers
ara13381, jmiro-21-0165.r3
External DOI: https://doi.org/10.1111/1754-9485.13381
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333551
Rights
Licence:
http://creativecommons.org/licenses/by-nc-nd/4.0/
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