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Title: Adoption of respiratory motion management in radiation therapy.
Austin Authors: Burton, Alex;Beveridge, Sabeena;Hardcastle, Nicholas;Lye, Jessica ;Sanagou, Masoumeh;Franich, Rick
Affiliation: Diagnostic Imaging, Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), Yallambie,Australia
Centre for Medical Radiation Physics, University of Wollongong, Wollongong,Australia
Olivia Newton-John Cancer Wellness and Research Centre
Australian Clinical Dosimetry Service (ACDS), Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), Melbourne,Australia
School of Science, RMIT University, Melbourne,Australia
Peter MacCallum Cancer Centre, Melbourne,Australia
Issue Date: Oct-2022
Date: 2022
Publication information: Physics and Imaging in Radiation Oncology 2022; 24: 21-29
Abstract: A survey on the patterns of practice of respiratory motion management (MM) was distributed to 111 radiation therapy facilities to inform the development of an end-to-end dosimetry audit including respiratory motion. The survey (distributed via REDCap) asked facilities to provide information specific to the combinations of MM techniques (breath-hold gating - BHG, internal target volume - ITV, free-breathing gating - FBG, mid-ventilation - MidV, tumour tracking - TT), sites treated (thorax, upper abdomen, lower abdomen), and fractionation regimes (conventional, stereotactic ablative body radiation therapy - SABR) used in their clinic. The survey was completed by 78% of facilities, with 98% of respondents indicating that they used at least one form of MM. The ITV approach was common to all MM-users, used for thoracic treatments by 89% of respondents, and upper and lower abdominal treatments by 38%. BHG was the next most prevalent (41% of MM users), with applications in upper abdominal and thoracic treatment sites (28% vs 25% respectively), but minimal use in the lower abdomen (9%). FBG and TT were utilised sparingly (17%, 7% respectively), and MidV was not selected at all. Two distinct treatment workflows (including use of motion limitation, imaging used for motion assessment, dose calculation, and image guidance procedures) were identified for the ITV and BHG MM techniques, to form the basis of the initial audit. Thoracic SABR with the ITV approach was common to nearly all respondents, while upper abdominal SABR using BHG stood out as more technically challenging. Other MM techniques were sparsely used, but may be considered for future audit development.
DOI: 10.1016/j.phro.2022.09.003
Journal: Physics and Imaging in Radiation Oncology
PubMed URL: 36148153
Type: Journal Article
Subjects: BHG, Breath-hold gating
Dosimetry audit
FBG, Free-breathing gating
ITV, Internal target volume
Intrafraction motion
MM, Motion management
MidV, Mid-ventilation
Motion management
Respiratory motion
TT, Tumour tracking
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