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Title:
BIOLOGICAL OPTICAL MEASUREMENT DEVICE AND SIGNAL SEPARATION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2014/103729
Kind Code:
A1
Abstract:
In order to provide a technique for increasing the precision of separation of a cutaneous blood flow signal and a cerebral blood flow signal without increasing the burden on a user in the separation of signal components from a surface layer site using a TDD-ICA method in biological optical measurement, the present invention imparts a plurality of candidate delay times to pre-acquired data having a short SD distance and data having a long SD distance. The present invention is also provided with an analysis unit (410) for calculating a separation degree indicating the degree of separation of a cutaneous blood flow signal after separation by the TDD-ICA method for each imparted candidate delay time, a delay time determination unit (420) for determining the optimum delay time in accordance with the separation degree, and a display data generation unit (430) for generating display data for displaying a comparison in a display unit (142) of a waveform prior to separation, the waveform of the cerebral blood flow signal after separation, and the waveform of the cutaneous blood flow signal during display of results separated using the determined delay time.

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Inventors:
OGIHARA MAKOTO (JP)
FUNANE TSUKASA (JP)
KIGUCHI MASASHI (JP)
Application Number:
PCT/JP2013/083284
Publication Date:
July 03, 2014
Filing Date:
December 12, 2013
Export Citation:
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Assignee:
HITACHI MEDICAL CORP (JP)
International Classes:
A61B5/1455; A61B10/00
Domestic Patent References:
WO2012005303A12012-01-12
WO2010150751A12010-12-29
Foreign References:
JP2012125370A2012-07-05
JP2010240298A2010-10-28
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