Title:
SUBJECT INFORMATION PROCESSING APPARATUS USING ACOUSTIC WAVES RECEIVED FROM THE SUBJECT
Document Type and Number:
WIPO Patent Application WO/2011/102105
Kind Code:
A1
Abstract:
There is provided a subject information processing apparatus including a plurality of first acoustic conversion elements (002) that receive an acoustic wave having a first frequency and being reflected inside a subject, and that convert the acoustic wave into an analog signal, a plurality of second acoustic conversion elements (002) that receive an acoustic wave having a second frequency and being generated when light is irradiated to a subject, and that convert the acoustic wave into an analog signal, an A/D converter (005) that converts the analog signals into digital signals, a data memory (006) that retains the digital signals, and a controller (011) that instructs the data memory to output the digital signals at a predetermined sampling frequency for each receiving axis. According to the invention, the first frequency is set to be higher than the second frequency and in the digital signal output from the data memory the number of samples per unit time of the digital signal derived from the acoustic wave having the second frequency on one receiving axis is smaller than the number of samples per unit time of the digital signal derived from the acoustic wave having the first frequency on one receiving axis.
Inventors:
NAGAE KENICHI
BABA YOSHITAKA
BABA YOSHITAKA
Application Number:
PCT/JP2011/000791
Publication Date:
August 25, 2011
Filing Date:
February 14, 2011
Export Citation:
Assignee:
CANON KK (JP)
NAGAE KENICHI
BABA YOSHITAKA
NAGAE KENICHI
BABA YOSHITAKA
International Classes:
A61B8/13; G01N29/24; G01S7/52
Domestic Patent References:
| WO2009154298A1 | 2009-12-23 | |||
| WO2007072490A1 | 2007-06-28 | |||
| WO2007148239A2 | 2007-12-27 | |||
| WO2009154298A1 | 2009-12-23 |
Foreign References:
| JP2005021380A | 2005-01-27 | |||
| JP2005021380A | 2005-01-27 | |||
| JP2010031171A | 2010-02-12 |
Other References:
SRIRANG MANOHAR; SUSANNE E. VAARTJES; JOHAN C. G. VAN HESPEN; JOOST M. KLAASE; FRANK M. VAN DEN ENGH; WIENDELT STEENBERGEN; TON G.: "Initial results of in vivo non-invasive cancer imaging in the human breast using near-infrared photoacoustics", OPT. EXPRESS, vol. 15, 2007, pages 12277 - 12285, XP007918752
Attorney, Agent or Firm:
SERA, Kazunobu et al. (4-10 Higashi Nihonbashi 3-chom, Chuo-ku Tokyo 04, JP)
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Claims: