Title:
ACOUSTIC WAVE IMAGING APPARATUS AND ACOUSTIC WAVE IMAGING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/129061
Kind Code:
A1
Abstract:
An acoustic wave imaging apparatus having: a phase aligning unit (9) which aligns phases of received signals obtained by a plurality of acoustic wave receiving elements (5); a complex signal acquiring unit (21) which generates complex signals out of the phase aligned received signals; a correlation matrix calculating unit (22) which calculates a correlation matrix of the complex signals; and an electric power calculating unit (24a, 24b, 24c, 24d) which calculates constrained minimum power of the received signals, using the correlation matrix and a predetermined constraint vector, wherein the correlation matrix calculating unit (22) calculates the correlation matrix at a predetermined cycle, and sequentially outputs the calculated correlation matrix to the electric power calculating unit (24a, 24b, 24c, 24d) at a predetermined cycle, and the electric power calculating unit (24a, 24b, 24c, 24d) calculates a plurality of constrained minimum powers in parallel using the calculated correlation matrices, the plurality of constrained minimum powers are corresponding to the correlation matrices respectively.
Inventors:
YODA, Haruo (())
NAGAE, Kenichi (())
NAGAE, Kenichi (())
Application Number:
JP2011/001823
Publication Date:
October 20, 2011
Filing Date:
March 28, 2011
Export Citation:
Assignee:
CANON KABUSHIKI KAISHA (30-2, Shimomaruko 3-chome Ohta-k, Tokyo 01, 14685, JP)
YODA, Haruo (())
NAGAE, Kenichi (())
YODA, Haruo (())
NAGAE, Kenichi (())
International Classes:
G01N21/17; A61B5/00; A61B8/14; G01N29/24; G01S7/52; G10K11/34
Attorney, Agent or Firm:
SERA, Kazunobu et al. (Acropolis 21 Building 6th floor, 4-10 Higashi Nihonbashi 3-chome, Chuo-k, Tokyo 04, 10300, JP)
Claims: