A flexible sensor system using resonance technology for soft tissue stiffness measurements: evaluation on silicone
2011 (English)In: IFMBE Proceedings of the 15th Nordic-Baltic Conference on Biomedical Engineering & Medical Physics (NBC 2011) / [ed] K. Dremstrup, S. Rees, M.Ø. Jensen, Aalborg: Springer , 2011, 21-24 p.Conference paper (Refereed)
One of the most common forms of cancer amongmen in Europe and the United States is prostate cancer. Thecancerous tissue is less soft, and has different biomechanicalproperties compared to healthy tissue. It has been shown thattactile sensors can be used to distinguish this difference. If apiezoelectric sensor is set to oscillate at its resonance frequencythrough a feed back circuit, a frequency shift is observed whenthe sensor comes in contact with a surface. This shift can becorrelated to the stiffness of the tissue. A flexible instrumenthas been developed, with which it is possible to scan both flatand spherical bodies and where the sensor can be tilted to havedifferent contact angles. Measurements performed in thisstudy on flat silicone discs of different stiffness showed arelationship between both the frequency shift and theimpression depth for the different silicone discs, when aconstant force was applied. The results are promising forfuture studies on silicone with different geometries and finallyon prostate tissue to complete the evaluation.
Place, publisher, year, edition, pages
Aalborg: Springer , 2011. 21-24 p.
, IFMBE Proceedings, ISSN 1680-0737 ; vol 34
Resonance sensor, Piezoelectric, Prostate cancer, Detection, Frequency shift
Medical Laboratory and Measurements Technologies
IdentifiersURN: urn:nbn:se:umu:diva-45160DOI: 10.1007/978-3-642-21683-1ISBN: 978-3-642-21682-4OAI: oai:DiVA.org:umu-45160DiVA: diva2:426444
15th NBC 2011. 14-17 June 2011. Aalborg, Denmark