Elsevier
Medical Dosimetry
,  volume 50 ,  issue 1 ,  pages 74-79

Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases

Fumiya Tsurumaki 1
, 
Yujiro NAKAJIMA 2
, 
Kei Ito 3
, 
Satoshi Kito 3
, 
Riki Kikumura 4
, 
Keiko Murofushi 3
, 
Atsunori Yorozu 4
, 
Yukio Fujita 5
1
 
2
 
3
 
4
 
Department of Radiology, Tokyo Medical Center, National Hospital Organization, Meguro-ku, Tokyo 152-8902, Japan. | 
5
 
Publication type: Journal Article
Publication date: 2025-01-01
Elsevier
scimago Q3
wos Q4
SJR: 0.373
CiteScore: 2.3
Impact factor: 1.0
ISSN: 09583947, 18734022
Abstract
In planning the treatment of spinal metastases using stereotactic body radiotherapy (SBRT), the optimal blocking of the spinal cord to match the leaf travel can be achieved with a first-arc collimator angle of approximately 90°. We aim to clarify the optimal second-arc collimator angles when the first-arc collimator angle is fixed to 90° in dual-arc volumetric modulated arc therapy (VMAT). For this retrospective study, we considered 37 spinal segments with spinal metastases and created dual-arc VMAT plans. In the plans, 24 Gy in 2 fractions were prescribed, and the first-arc collimator angle was fixed to 90° while varying the second-arc collimator angle in increments of 15° from 0° to 90°. All the plans were normalized such that the planning organ-at-risk volume for the spinal cord D
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Tsurumaki F. et al. Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases // Medical Dosimetry. 2025. Vol. 50. No. 1. pp. 74-79.
GOST all authors (up to 50) Copy
Tsurumaki F., NAKAJIMA Y., Ito K., Kito S., Kikumura R., Murofushi K., Yorozu A., Fujita Y. Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases // Medical Dosimetry. 2025. Vol. 50. No. 1. pp. 74-79.
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TY - JOUR
DO - 10.1016/j.meddos.2024.08.004
UR - https://linkinghub.elsevier.com/retrieve/pii/S0958394724000451
TI - Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases
T2 - Medical Dosimetry
AU - Tsurumaki, Fumiya
AU - NAKAJIMA, Yujiro
AU - Ito, Kei
AU - Kito, Satoshi
AU - Kikumura, Riki
AU - Murofushi, Keiko
AU - Yorozu, Atsunori
AU - Fujita, Yukio
PY - 2025
DA - 2025/01/01
PB - Elsevier
SP - 74-79
IS - 1
VL - 50
PMID - 39306546
SN - 0958-3947
SN - 1873-4022
ER -
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@article{2025_Tsurumaki,
author = {Fumiya Tsurumaki and Yujiro NAKAJIMA and Kei Ito and Satoshi Kito and Riki Kikumura and Keiko Murofushi and Atsunori Yorozu and Yukio Fujita},
title = {Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases},
journal = {Medical Dosimetry},
year = {2025},
volume = {50},
publisher = {Elsevier},
month = {jan},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0958394724000451},
number = {1},
pages = {74--79},
doi = {10.1016/j.meddos.2024.08.004}
}
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Tsurumaki, Fumiya, et al. “Optimal combination of collimator angles for dual-arc volumetric modulated arc therapy planning in stereotactic body radiotherapy for spinal metastases.” Medical Dosimetry, vol. 50, no. 1, Jan. 2025, pp. 74-79. https://linkinghub.elsevier.com/retrieve/pii/S0958394724000451.