Dosimetric effects of the ipsilateral shoulder position variations in the sitting-positioned boron neutron capture therapy for lower neck tumor

Ryohei Kato; Katsumi Hirose; Takahiro Kato; Tomoaki Motoyanagi; Kazuhiro Arai; Takaomi Harada; Akihiko Takeuchi; Yuhei Yamazaki; Yuki Narita; Shinya Komori; Mariko Sato; Yoshihiro Takai

doi:10.1016/j.apradiso.2022.110397

Dosimetric effects of the ipsilateral shoulder position variations in the sitting-positioned boron neutron capture therapy for lower neck tumor

Appl Radiat Isot. 2022 Oct:188:110397. doi: 10.1016/j.apradiso.2022.110397. Epub 2022 Jul 31.

Authors

Affiliations

¹ Department of Radiation Physics and Technology, Southern Tohoku BNCT Research Center, Fukushima, 963-8052, Japan. Electronic address: [email protected].
² Department of Radiation Oncology, Southern Tohoku BNCT Research Center, Fukushima, 963-8052, Japan.
³ Department of Radiation Physics and Technology, Southern Tohoku BNCT Research Center, Fukushima, 963-8052, Japan; School of Health Sciences, Fukushima Medical University, Fukushima, 960-8031, Japan.
⁴ Department of Radiation Physics and Technology, Southern Tohoku BNCT Research Center, Fukushima, 963-8052, Japan.

PMID: 35933906
DOI: 10.1016/j.apradiso.2022.110397

Abstract

We aimed to evaluate dosimetric effects of ipsilateral shoulder position variations (ISPVs) in sitting-positioned boron neutron capture therapy (BNCT) for lower neck tumor. The ISPVs were simulated using deformed shoulder images that can simulate arbitrary shape. The dose-volume parameters for the tumor in the rotated shoulder plans considerably varied compared with that for the mucosa. Even in a small number of cases, these differences were clearly observed among patients. The ISPVs in lower neck BNCT have great dosimetric effects.

Keywords: BNCT; Head and neck cancer; Reproducibility error; Setup error; Sitting position.

MeSH terms

Boron Compounds
Boron Neutron Capture Therapy* / methods
Head and Neck Neoplasms* / radiotherapy
Humans
Neoplasm Recurrence, Local
Shoulder / pathology
Sitting Position

Substances

Boron Compounds