In Vivo characterization of skin using a weiner nonlinear stochastic identification method
This paper describes an indentometer device used to identify the linear dynamic and nonlinear properties of skin and underlying tissue using an in vivo test. The device uses a Lorentz force actuator to apply a dynamic force to the skin and measures the resulting displacement. It was found that the s...
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2010
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| Online Access: | http://hdl.handle.net/1721.1/52577 https://orcid.org/0000-0003-2314-3031 https://orcid.org/0000-0002-8251-5432 |
| _version_ | 1826202918416547840 |
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| author | Chen, Yi Hunter, Ian |
| author2 | Massachusetts Institute of Technology. BioInstrumentation Laboratory |
| author_facet | Massachusetts Institute of Technology. BioInstrumentation Laboratory Chen, Yi Hunter, Ian |
| author_sort | Chen, Yi |
| collection | MIT |
| description | This paper describes an indentometer device used to identify the linear dynamic and nonlinear properties of skin and underlying tissue using an in vivo test. The device uses a Lorentz force actuator to apply a dynamic force to the skin and measures the resulting displacement. It was found that the skin could be modeled as a Wiener system (i.e. a linear dynamic system followed by a static nonlinearity). Using a stochastic nonlinear system identification technique, the method presented in this paper was able to identify the dynamic linear and static nonlinear mechanical parameters of the indentometer-skin system within 2 to 4 seconds. The shape of the nonlinearity was found to vary depending on the area of the skin that was tested. We show that the device can repeatably distinguish between different areas of human tissue for multiple test subjects. |
| first_indexed | 2024-09-23T12:26:32Z |
| format | Article |
| id | mit-1721.1/52577 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:26:32Z |
| publishDate | 2010 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/525772022-10-01T09:10:03Z In Vivo characterization of skin using a weiner nonlinear stochastic identification method Chen, Yi Hunter, Ian Massachusetts Institute of Technology. BioInstrumentation Laboratory Koch Institute for Integrative Cancer Research at MIT Hunter, Ian Chen, Yi Hunter, Ian This paper describes an indentometer device used to identify the linear dynamic and nonlinear properties of skin and underlying tissue using an in vivo test. The device uses a Lorentz force actuator to apply a dynamic force to the skin and measures the resulting displacement. It was found that the skin could be modeled as a Wiener system (i.e. a linear dynamic system followed by a static nonlinearity). Using a stochastic nonlinear system identification technique, the method presented in this paper was able to identify the dynamic linear and static nonlinear mechanical parameters of the indentometer-skin system within 2 to 4 seconds. The shape of the nonlinearity was found to vary depending on the area of the skin that was tested. We show that the device can repeatably distinguish between different areas of human tissue for multiple test subjects. 2010-03-15T16:05:33Z 2010-03-15T16:05:33Z 2009-11 2009-04 Article http://purl.org/eprint/type/ConferencePaper 978-1-4244-3296-7 1557-170X http://hdl.handle.net/1721.1/52577 Yi Chen, and I.W. Hunter. “In Vivo characterization of skin using a weiner nonlinear stochastic system identification method.” Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE. 2009. 6010-6013. © 2009 IEEE https://orcid.org/0000-0003-2314-3031 https://orcid.org/0000-0002-8251-5432 en_US http://dx.doi.org/10.1109/IEMBS.2009.5334028 2009 Engineering in Medicine and Biology Society Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | Chen, Yi Hunter, Ian In Vivo characterization of skin using a weiner nonlinear stochastic identification method |
| title | In Vivo characterization of skin using a weiner nonlinear stochastic identification method |
| title_full | In Vivo characterization of skin using a weiner nonlinear stochastic identification method |
| title_fullStr | In Vivo characterization of skin using a weiner nonlinear stochastic identification method |
| title_full_unstemmed | In Vivo characterization of skin using a weiner nonlinear stochastic identification method |
| title_short | In Vivo characterization of skin using a weiner nonlinear stochastic identification method |
| title_sort | in vivo characterization of skin using a weiner nonlinear stochastic identification method |
| url | http://hdl.handle.net/1721.1/52577 https://orcid.org/0000-0003-2314-3031 https://orcid.org/0000-0002-8251-5432 |
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