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Title:
3D ACOUSTIC IMAGING DEVICE AND 3D ACOUSTIC IMAGING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/088709
Kind Code:
A1
Abstract:
A 3D acoustic imaging device includes alight source (10) for generating a near infrared pulse, means for collecting the pulse light and applying it to an examinee (15), a laser scan unit (11) for scanning the focal position of the pulse light, and an acoustic transducer (18) for detecting an acoustic wave generated from the examinee (15) by multi-photon absorption of the pulse light. 3D data showing the material distribution in the examinee (15) is acquired according to the intensity information and the generation position information on the acoustic wave and a tomogram at an arbitrary plane is displayed on a display unit (23). Thus, by using the non-linear optical effect of the near infrared pulse light, it is possible to locally generate an acoustic wave from the focal position in the examinee (15) and observe a deep region of the examinee (15) with a high resolution. Moreover, by using the light of a near infrared region as excitation light, it is possible to prevent attenuation of the excitation light in a biological body and increase the penetration depth.

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Inventors:
TAKAMATSU TETSURO (JP)
YAMAOKA YOSHIHISA (JP)
Application Number:
PCT/JP2007/000045
Publication Date:
August 09, 2007
Filing Date:
January 31, 2007
Export Citation:
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Assignee:
KANSAI TECH LICENSING ORG CO (JP)
TAKAMATSU TETSURO (JP)
YAMAOKA YOSHIHISA (JP)
International Classes:
A61B8/00; G01N29/00
Foreign References:
JP2005218684A2005-08-18
JP2005132763A2005-05-26
Other References:
TANIFUJI M. ET AL.: "Hikari ni yoru Nokino Keisoku", OYO BUTSURI, vol. 68, no. 9, 10 September 1999 (1999-09-10), pages 997 - 1007, XP003015873
NAKAMURA O.: "Femtosecond Laser ni yoru Seitai no 3 Jigen Kako", DAI 51 KAI PROCEEDINGS OF LASER MATERIALS PROCESSING CONFERENCE, 7 December 2000 (2000-12-07), pages 38 - 43, XP003015874
Attorney, Agent or Firm:
KOBAYASI, Ryohei (7th Floor Hougen-Sizyokarasuma Building, 37, Motoakuozi-tyo, Higasinotouin Sizyo-sagaru, Simogyo-k, Kyoto-si Kyoto 91, JP)
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