Quantitative evaluation of image recognition performance of fiducial markers in real-time tumor-tracking radiation therapy

Miyamoto, Naoki; Maeda, Kenichiro; Abo, Daisuke; Morita, Ryo; Takao, Seishin; Matsuura, Taeko; Katoh, Norio; Umegaki, Kikuo; Shimizu, Shinichi; Shirato, Hiroki

Quantitative evaluation of image recognition performance of fiducial markers in real-time tumor-tracking radiation therapy

Miyamoto, Naoki; Maeda, Kenichiro; Abo, Daisuke et al.

Physica medica : European journal of medical physics, 2019, 65, 33-39

Permalink : https://hdl.handle.net/2115/79391

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アクセス権	open access
URI	https://hdl.handle.net/2115/79391
タイトル	Quantitative evaluation of image recognition performance of fiducial markers in real-time tumor-tracking radiation therapy
著者	Miyamoto, Naoki ; Maeda, Kenichiro ; Abo, Daisuke ; Morita, Ryo ; Takao, Seishin ; Matsuura, Taeko ; Katoh, Norio ; Umegaki, Kikuo ; Shimizu, Shinichi ; Shirato, Hiroki
e-Rad_Researcher 00552879 著者名 Miyamoto, Naoki
著者名 Maeda, Kenichiro
e-Rad_Researcher 30399844 著者名 Abo, Daisuke
著者名 Morita, Ryo
e-Rad_Researcher 10614216 著者名 Takao, Seishin
e-Rad_Researcher 90590266 著者名 Matsuura, Taeko
e-Rad_Researcher 80572495 著者名 Katoh, Norio
e-Rad_Researcher 40643193 著者名 Umegaki, Kikuo
e-Rad_Researcher 50463724 著者名 Shimizu, Shinichi
e-Rad_Researcher 20187537 著者名 Shirato, Hiroki
言語	英語
キーワード	Fiducial marker
	Image recognition
	Real-time tumor-tracking radiation therapy
	Image-guided radiation therapy
発行日	2019-09
出版者	Elsevier
収録物名	Physica medica : European journal of medical physics
巻(号)	65
ページ	33-39
抄録	Purpose: To quantitatively evaluate and compare the image recognition performance of multiple fiducial markers available in real-time tumor-tracking radiation therapy (RTRT). Methods: Clinically available markers including sphere shape, coil shape, cylinder shape, line shape, and ball shape (folded line shape) were evaluated in liver and lung models of RTRT. Maximum thickness of the polymethyl metacrylate (PMMA) phantom that could automatically recognize the marker was determined by template-pattern matching. Image registration accuracy of the fiducial marker was determined using liver RTRT model. Lung RTRT was mimicked with an anthropomorphic chest phantom and a one-dimensional motion stage in order to simulate marker motion in heterogeneous fluoroscopic images. The success or failure of marker tracking and image registration accuracy for the lung model were evaluated in the same manner as that for the liver model. Results: All fiducial markers except for line shape and coil shape of thinner diameter were recognized by the PMMA phantom, which is assumed to have the typical thickness of an abdomen, with two-dimensional image registration accuracy of < 2 pixels. Three-dimensional calculation error with the use of real-time stereoscopic fluoroscopy in RTRT was thought to be within 1 mm. In the evaluation using the lung model, the fiducial markers were recognized stably with sufficient accuracy for clinical application. The same was true for the evaluation using the liver model. Conclusions: The image recognition performance of fiducial markers was quantified and compared. The results presented here may be useful for the selection of fiducial markers.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	1120-1797
EISSN	1724-191X
関連情報	PMID 31430584
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.ejmp.2019.08.004