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Computational optical palpation: A finiteelement approach to micro-scale tactile imaging using a compliant sensor

Wijesinghe, P., Sampson, David and Kennedy, B.F. (2017) Computational optical palpation: A finiteelement approach to micro-scale tactile imaging using a compliant sensor Journal of the Royal Society Interface, 14 (128).

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High-resolution tactile imaging, superior to the sense of touch, has potential for future biomedical applications such as robotic surgery. In this paper, we propose a tactile imaging method, termed computational optical palpation, based on measuring the change in thickness of a thin, compliant layer with optical coherence tomography and calculating tactile stress using finite-element analysis. We demonstrate our method on test targets and on freshly excised human breast fibroadenoma, demonstrating a resolution of up to 15–25 µm and a field of view of up to 7 mm. Our method is open source and readily adaptable to other imaging modalities, such as ultrasonography and confocal microscopy.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Health and Medical Sciences
Authors :
Wijesinghe, P.
Kennedy, B.F.
Date : 2017
DOI : 10.1098/rsif.2016.0878
Uncontrolled Keywords : Elastography, Finite-element analysis, Optical coherence tomography, Tactile imaging, Medical applications, Medical imaging, Optical tomography, Robotic surgery, Tomography, Biomedical applications, Change in thickness, Compliant layer, Elastography, Field of views, Finite-element approach, High resolution, Imaging modality, Finite element method, Article, breast fibroadenoma, computational optical palpation, finite element analysis, friction, geometry, histology, human, human tissue, imaging and display, optical coherence tomography, optical coherence tomography device, palpation, surface property, surface stress, tactile feedback, tactile imaging, Young modulus, breast tumor, diagnostic imaging, female, fibroadenoma, finite element analysis, optical coherence tomography, procedures, theoretical model, Breast Neoplasms, Female, Fibroadenoma, Finite Element Analysis, Humans, Models, Theoretical, Tomography, Optical Coherence
Depositing User : Maria Rodriguez-Marquez
Date Deposited : 04 Jun 2018 08:55
Last Modified : 19 Sep 2018 11:32

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