Method and apparatus for non-invasive measurement of living body characteristics by photoacoustics
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United States of America Patent
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Dec 4, 2012
Grant Date -
Jan 18, 2007
app pub date -
Oct 28, 2003
filing date -
Oct 31, 2002
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Abstract
A method and apparatus for non-invasive measurement of living body information comprises a light source configured to generate light containing a specific wavelength component, an irradiation unit configured to irradiate a subject with the light, and at least one acoustic signal detection unit including piezoelectric devices formed of a piezoelectric single crystal containing lead titanate and configured to detect an acoustic signal which is generated due to the energy of the irradiation light absorbed by a specific substance present in or on a subject.
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