Title:
生体計測装置
Document Type and Number:
Japanese Patent JP5420163
Kind Code:
B2
Abstract:
A bioinstrumentation apparatus irradiates light onto a measured region of a subject, detects diffused light to acquire internal information on the measured region, and includes: a container holding a light transmitting medium; a light irradiation unit including a plurality of light emitting ends fixed to the container and irradiating a first light and a second light that mutually differ in wavelength onto the measured region that is immersed in the medium; a light detection unit including a plurality of light detecting ends fixed to the container and detecting the diffused light from the measured region; and a computing unit computing the internal information based on an output signal from the light detection unit; the wavelength of the first light being a wavelength at which an absorption coefficient of the measured region and a mean value of absorption coefficient of the medium are substantially equal, the wavelength of the second light being a wavelength at which the absorption coefficient of the measured region is greater than the mean value of the absorption coefficient of the medium, and the computing unit computing the internal information based on an output signal related to diffused light of the first light and computing boundary information between the measured region and the medium based on an output signal related to diffused light of the second light.
Inventors:
Norio Ueda
Yutaka Yamashita
Yutaka Yamashita
Application Number:
JP2007276770A
Publication Date:
February 19, 2014
Filing Date:
October 24, 2007
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
G01N21/17; A61B10/00
Domestic Patent References:
| JP11173976A | ||||
| JP10073481A | ||||
| JP10500338A | ||||
| JP2000146828A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Satoru Ishida
Shotaro Terasawa
Hiroto Kido
Masato Ikeda
Yoshiki Kuroki
Satoru Ishida
Shotaro Terasawa
Hiroto Kido
Masato Ikeda