FLASH radiotherapy treatment planning and models for electron beams.

Details

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State: Public
Version: Final published version
License: CC BY-NC-ND 4.0
Serval ID
serval:BIB_6B85A75C99C6
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
FLASH radiotherapy treatment planning and models for electron beams.
Journal
Radiotherapy and oncology
Author(s)
Rahman M., Trigilio A., Franciosini G., Moeckli R., Zhang R., Böhlen T.T.
ISSN
1879-0887 (Electronic)
ISSN-L
0167-8140
Publication state
Published
Issued date
10/2022
Peer-reviewed
Oui
Volume
175
Pages
210-221
Language
english
Notes
Publication types: Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
Publication Status: ppublish
Abstract
The FLASH effect designates normal tissue sparing at ultra-high dose rate (UHDR, >40 Gy/s) compared to conventional dose rate (∼0.1 Gy/s) irradiation while maintaining tumour control and has the potential to improve the therapeutic ratio of radiotherapy (RT). UHDR high-energy electron (HEE, 4-20 MeV) beams are currently a mainstay for investigating the clinical potential of FLASH RT for superficial tumours. In the future very-high energy electron (VHEE, 50-250 MeV) UHDR beams may be used to treat deep-seated tumours. UHDR HEE treatment planning focused at its initial stage on accurate dosimetric modelling of converted and dedicated UHDR electron RT devices for the clinical transfer of FLASH RT. VHEE treatment planning demonstrated promising dosimetric performance compared to clinical photon RT techniques in silico and was used to evaluate and optimise the design of novel VHEE RT devices. Multiple metrics and models have been proposed for a quantitative description of the FLASH effect in treatment planning, but an improved experimental characterization and understanding of the FLASH effect is needed to allow for an accurate and validated modelling of the effect in treatment planning. The importance of treatment planning for electron FLASH RT will augment as the field moves forward to treat more complex clinical indications and target sites. In this review, TPS developments in HEE and VHEE are presented considering beam models, characteristics, and future FLASH applications.
Keywords
Humans, Electrons, Radiometry/methods, Radiotherapy Planning, Computer-Assisted/methods, Photons, Neoplasms/radiotherapy, Radiotherapy Dosage, Electron beams, FLASH, IORT, TPS, UHDR, VHEE
Pubmed
Web of science
Open Access
Yes
Create date
22/08/2022 10:49
Last modification date
11/07/2023 5:55
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