Influence of respiration on dose calculation in stereotactic body radiotherapy of the lung

Yamazaki, Rie; Onimaru, Rikiya; Katoh, Norio; Inoue, Tetsuya; Nishioka, Tetsuya; Shirato, Hiroki; Date, Hiroyuki

Influence of respiration on dose calculation in stereotactic body radiotherapy of the lung

Yamazaki, Rie; Onimaru, Rikiya; Katoh, Norio et al.

Radiological physics and technology, 2014, 7(2), 284-289

Permalink : https://hdl.handle.net/2115/76939

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アクセス権	open access
URI	https://hdl.handle.net/2115/76939
タイトル	Influence of respiration on dose calculation in stereotactic body radiotherapy of the lung
著者	Yamazaki, Rie ; Onimaru, Rikiya ; Katoh, Norio ; Inoue, Tetsuya ; Nishioka, Tetsuya ; Shirato, Hiroki ; Date, Hiroyuki
著者名 Yamazaki, Rie
e-Rad_Researcher 80374461 著者名 Onimaru, Rikiya
e-Rad_Researcher 80572495 著者名 Katoh, Norio
e-Rad_Researcher 10431363 著者名 Inoue, Tetsuya
著者名 Nishioka, Tetsuya
e-Rad_Researcher 20187537 著者名 Shirato, Hiroki
e-Rad_Researcher 10197600 著者名 Date, Hiroyuki
言語	英語
キーワード	Stereotactic body radiotherapy
	Lung tumor
	Respiration
	Dose calculation
	Chest wall motion
発行日	2014-07
出版者	Springer
収録物名	Radiological physics and technology
巻(号)	7(2)
ページ	284-289
抄録	Our purpose in this study was to evaluate the variation in calculated doses caused by respiration in stereotactic body radiotherapy (SBRT) of the lung. The study targeted ten patients who underwent SBRT for lung tumors. CT images were acquired during free breathing and in the inhalation and exhalation phases. We compared the CT image at inhalation with the image at exhalation so as to measure the change in lung volume, variation in the CT value, and displacement of the chest wall. The lung volume change was shown to be correlated with the maximum of the chest wall motion and with the variation in the CT value. A statistically significant difference was observed in the CT values between inhalation and exhalation (p < 0.05). The total dose variation at the isocenter was confined within ±2 %. However, the dose from individual beams can vary significantly when the chest wall moves more than 10 mm in natural breathing.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a post-peer-review, pre-copyedit version of an article published in Radiological physics and technology. The final authenticated version is available online at: http://dx.doi.org/10.1007/s12194-014-0263-4
PISSN	1865-0333
EISSN	1865-0341
NCID	AA12236881
関連情報	PMID 24643842
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s12194-014-0263-4