Optical imaging of arteriovenous fistula for clinical application: Clarification of transillumination image of blood vessel by image-subtraction

Hideaki Kamiyama, Masataka Kitama, Hisae O. Shimizu, Masaji Yamashita, Toru Yokoyama, Yohichiro Kojima, Koichi Shimizu

研究成果: Article

抄録

We have proposed a noninvasive technique to observe an arteriovenous fistula using an optical transillumination image of a blood vessel. To improve the accuracy of inner-diameter measurement of the vessel, we examined the effectiveness of the imagesubtraction technique using multi-wavelength light sources. In the experiment, we fabricated a model-phantom to simulate a human forearm. It contained the tube filled with replaceable absorber liquid which simulated the blood in different wavelengths of illuminating light. The transillumination images of the blood column were recorded with the liquid of different absorption coefficients. The imagesubtraction technique was applied and the images were analyzed. With the subtraction, the sharpness of the column image was improved by 55%, and the error in the diameter measurement was reduced from 28% to 4%. This result verified the effectiveness of the image-subtraction to promote the clinical application of the proposed technique for the controlled care of the arteriovenous fistula.

元の言語English
ページ(範囲)593-594
ページ数2
ジャーナルTransactions of Japanese Society for Medical and Biological Engineering
55
発行部数Proc
DOI
出版物ステータスPublished - 2017

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Transillumination
Blood vessels
Blood
Imaging techniques
Wavelength
Liquids
Light sources
Experiments

ASJC Scopus subject areas

  • Biomedical Engineering

これを引用

Optical imaging of arteriovenous fistula for clinical application : Clarification of transillumination image of blood vessel by image-subtraction. / Kamiyama, Hideaki; Kitama, Masataka; Shimizu, Hisae O.; Yamashita, Masaji; Yokoyama, Toru; Kojima, Yohichiro; Shimizu, Koichi.

:: Transactions of Japanese Society for Medical and Biological Engineering, 巻 55, 番号 Proc, 2017, p. 593-594.

研究成果: Article

Kamiyama, Hideaki ; Kitama, Masataka ; Shimizu, Hisae O. ; Yamashita, Masaji ; Yokoyama, Toru ; Kojima, Yohichiro ; Shimizu, Koichi. / Optical imaging of arteriovenous fistula for clinical application : Clarification of transillumination image of blood vessel by image-subtraction. :: Transactions of Japanese Society for Medical and Biological Engineering. 2017 ; 巻 55, 番号 Proc. pp. 593-594.
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abstract = "We have proposed a noninvasive technique to observe an arteriovenous fistula using an optical transillumination image of a blood vessel. To improve the accuracy of inner-diameter measurement of the vessel, we examined the effectiveness of the imagesubtraction technique using multi-wavelength light sources. In the experiment, we fabricated a model-phantom to simulate a human forearm. It contained the tube filled with replaceable absorber liquid which simulated the blood in different wavelengths of illuminating light. The transillumination images of the blood column were recorded with the liquid of different absorption coefficients. The imagesubtraction technique was applied and the images were analyzed. With the subtraction, the sharpness of the column image was improved by 55{\%}, and the error in the diameter measurement was reduced from 28{\%} to 4{\%}. This result verified the effectiveness of the image-subtraction to promote the clinical application of the proposed technique for the controlled care of the arteriovenous fistula.",
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AU - Yamashita, Masaji

AU - Yokoyama, Toru

AU - Kojima, Yohichiro

AU - Shimizu, Koichi

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