Title:
PHOTOACOUSTIC DEVICE, PROBE FOR PHOTOACOUSTIC DEVICE, AND METHOD FOR OBTAINING PHOTOACOUSTIC DETECTION SIGNAL
Document Type and Number:
WIPO Patent Application WO/2013/114878
Kind Code:
A1
Abstract:
[Problem] To sufficiently widen the band of a probe for a photoacoustic device. [Solution] A probe for a photoacoustic device, said probe detecting photoacoustic waves emitted from a body to be tested after the body to be tested has been irradiated with light. The probe for a photoacoustic device is provided with: an inorganic transducer that comprises a lower electrode (52), an inorganic piezoelectric thin film (53), and an upper electrode (54), and that detects photoacoustic waves in a predetermined first frequency domain; and an organic transducer that comprises a lower electrode (56), an organic piezoelectric thin film (57), and an upper electrode (58), that is formed so that the area of the signal electrode is larger than the inorganic transducer, and that detects photoacoustic waves in a second frequency domain that includes a domain of a lower frequency than the first frequency domain.
Inventors:
IRISAWA KAKU (JP)
WADA TAKATSUGU (JP)
WADA TAKATSUGU (JP)
Application Number:
PCT/JP2013/000513
Publication Date:
August 08, 2013
Filing Date:
January 31, 2013
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
A61B8/00
Domestic Patent References:
| WO2009069379A1 | 2009-06-04 |
Foreign References:
| JP2012192021A | 2012-10-11 |
Other References:
S.W.FU ET AL.: "Ultrasonic transducer study for photoacoustic calorimetry", PROCEEDINGS OF 1995 IEEE ULTRASONICS SYMPOSIUM, vol. 2, November 1995 (1995-11-01), pages 859 - 862, XP010157428
NING-LI YANG ET AL.: "Photolyses of mammalian oxy-hemoglobin studied by nanosecond photoacoustic calorimetry", ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS, vol. 466, no. 1, October 2007 (2007-10-01), pages 78 - 84, XP022258761
XUEDING WANG ET AL.: "Photoacoustic imaging with a commercial ultrasound system and a custom probe", ULTRASOUND IN MEDICINE & BIOLOGY, vol. 37, no. 3, March 2011 (2011-03-01), pages 484 - 492, XP028362894
GENG KU ET AL.: "Multiple-bandwidth photoacoustic tomography", PHYSICS IN MEDICINE AND BIOLOGY, vol. 49, no. 7, April 2004 (2004-04-01), pages 1329 - 1338, XP020024075
NING-LI YANG ET AL.: "Photolyses of mammalian oxy-hemoglobin studied by nanosecond photoacoustic calorimetry", ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS, vol. 466, no. 1, October 2007 (2007-10-01), pages 78 - 84, XP022258761
XUEDING WANG ET AL.: "Photoacoustic imaging with a commercial ultrasound system and a custom probe", ULTRASOUND IN MEDICINE & BIOLOGY, vol. 37, no. 3, March 2011 (2011-03-01), pages 484 - 492, XP028362894
GENG KU ET AL.: "Multiple-bandwidth photoacoustic tomography", PHYSICS IN MEDICINE AND BIOLOGY, vol. 49, no. 7, April 2004 (2004-04-01), pages 1329 - 1338, XP020024075
Attorney, Agent or Firm:
YANAGIDA, Masashi et al. (JP)
Seiji Yanagida (JP)
Seiji Yanagida (JP)
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Claims: