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Tactile resonance sensors in medicine.
Umeå University, Faculty of Science and Technology, Centre for Biomedical Engineering and Physics (CMTF).
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics.
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2009 (English)In: Journal of Medical Engineering & Technology, ISSN 0309-1902, E-ISSN 1464-522X, Vol. 33, no 4, 263-273 p.Article in journal (Refereed) Published
Abstract [en]

Tactile sensors in general are used for measuring the physical parameters associated with contact between sensor and object. Tactile resonance sensors in particular are based on the principle of measuring the frequency shift, Deltaf, defined as the difference between a freely vibrating sensor resonance frequency and the resonance frequency measured when the sensor makes contact to an object. Deltaf is therefore related to the acoustic impedance of the object and can be used to characterize its material properties. In medicine, tactile resonance sensor systems have been developed for the detection of cancer, human ovum fertility, eye pressure and oedema. In 1992 a Japanese research group published a paper presenting a unique phase shift circuit to facilitate resonance measurements. In this review we summarize the current state-of-the-art of tactile resonance sensors in medicine based on the phase shift circuit and discuss the relevance of the measured parameters for clinical diagnosis. Future trends and applications enabled by this technology are also predicted.

Place, publisher, year, edition, pages
2009. Vol. 33, no 4, 263-273 p.
Keyword [en]
tactile sensor, resonance sensor, biomechanical properties
National Category
Medical and Health Sciences
URN: urn:nbn:se:umu:diva-24038DOI: 10.1080/03091900802491188PubMedID: 19384701OAI: diva2:226009
Available from: 2009-06-30 Created: 2009-06-30 Last updated: 2015-03-19Bibliographically approved

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Lindahl, O AEklund, AndersHallberg, Per
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