Application of video-assisted tactile sensor and finite element simulation for estimating young's modulus of porcine liver

Marat Dosaev, Irina Goryacheva, Yuri Martynenko, Alexey Morozov, Fyodor Antonov, Fong Chin Su, Chien Hsien Yeh, Ming Shaung Ju

研究成果: Article

4 引文 (Scopus)

摘要

Surgeons use palpation for tasks such as the identification of biological tissues and the localization of blood vessels and boundaries of local inclusions. Human tissues are unavailable for palpation during laparoscopic operations. A device that can help surgeons distinguish different soft tissues is thus desirable. This study proposes an approach for palpation that uses a self-developed video-assisted tactile sensor. The sensing device, which consists of a video camera, a force sensor, and a semispherical head made of polydimethylsiloxane, can measure the contact area and load on an object. A numerical simulation of the indentation process was performed based on the finite element method. The bisection method was used to estimate the Young's modulus of the object by fitting the results of the simulation to the experimental contact area and load. Fresh porcine livers were used to represent soft tissues to verify the approach. Force control was used in the tests and calculations. The average Young's modulus of the fresh porcine livers was 1.1 kPa. To simulate altered tissue, the porcine liver was boiled. The results showed that the modulus of the boiled livers was 25 times higher than that of the fresh porcine livers. Therefore, the proposed approach can distinguish normal tissue from altered tissue, and is thus feasible for palpation.

原文English
頁(從 - 到)510-516
頁數7
期刊Journal of Medical and Biological Engineering
35
發行號4
DOIs
出版狀態Published - 2015 一月 1

指紋

Liver
Elastic moduli
Tissue
Sensors
Force control
Blood vessels
Video cameras
Polydimethylsiloxane
Indentation
Finite element method
Computer simulation

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

引用此文

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abstract = "Surgeons use palpation for tasks such as the identification of biological tissues and the localization of blood vessels and boundaries of local inclusions. Human tissues are unavailable for palpation during laparoscopic operations. A device that can help surgeons distinguish different soft tissues is thus desirable. This study proposes an approach for palpation that uses a self-developed video-assisted tactile sensor. The sensing device, which consists of a video camera, a force sensor, and a semispherical head made of polydimethylsiloxane, can measure the contact area and load on an object. A numerical simulation of the indentation process was performed based on the finite element method. The bisection method was used to estimate the Young's modulus of the object by fitting the results of the simulation to the experimental contact area and load. Fresh porcine livers were used to represent soft tissues to verify the approach. Force control was used in the tests and calculations. The average Young's modulus of the fresh porcine livers was 1.1 kPa. To simulate altered tissue, the porcine liver was boiled. The results showed that the modulus of the boiled livers was 25 times higher than that of the fresh porcine livers. Therefore, the proposed approach can distinguish normal tissue from altered tissue, and is thus feasible for palpation.",
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Application of video-assisted tactile sensor and finite element simulation for estimating young's modulus of porcine liver. / Dosaev, Marat; Goryacheva, Irina; Martynenko, Yuri; Morozov, Alexey; Antonov, Fyodor; Su, Fong Chin; Yeh, Chien Hsien; Ju, Ming Shaung.

於: Journal of Medical and Biological Engineering, 卷 35, 編號 4, 01.01.2015, p. 510-516.

研究成果: Article

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AU - Goryacheva, Irina

AU - Martynenko, Yuri

AU - Morozov, Alexey

AU - Antonov, Fyodor

AU - Su, Fong Chin

AU - Yeh, Chien Hsien

AU - Ju, Ming Shaung

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