ENDOSCOPIC SYSTEM, PROCESSOR DEVICE, LIGHT SOURCE DEVICE, AND OPERATION METHOD

Title:

ENDOSCOPIC SYSTEM, PROCESSOR DEVICE, LIGHT SOURCE DEVICE, AND OPERATION METHOD

Document Type and Number:

WIPO Patent Application WO/2015/037344

Kind Code:

A1

Abstract:

Provided are an endoscopic system, a processor device, a light source device, and an operation method that reduce oxygen saturation artifacts that appear during magnified observation. The light source device (14) of the endoscopic system (10) is capable of emitting signal light in a light emission pattern A, which irradiates a signal light (LA1) with a center wavelength of λA1 and a signal light (LA2) with a center wavelength of λA2 respectively on the test object, and a light emission pattern (B), which irradiates a signal light (LB1) with a center wavelength of λB1 and a signal light (LB2) with a center wavelength of λB2 respectively on the test object. The respective center wavelengths λA1, λA2, λB1, and λB2 satisfy |λA1 - λA2| > |λB1 - λB2|. An oxygen saturation-calculating part (83) is contained in an oxygen saturation image-generating section (76) and calculates the oxygen saturation for each pixel, which receives reflected light from the signal light (LA1) and reflected light from the signal light (LA2) when light emission pattern A is used and receives reflected light from the signal light (LB1) and reflected light from the signal light (LB2) when light emission pattern B is used, on the basis of the ratio of the respective image signals output from the same pixel. A control unit (67) switches the light emission pattern of the light source device (14) between light emission pattern A and light emission pattern B.

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Inventors:

SAITO TAKAAKI (JP)

Application Number:

PCT/JP2014/069655

Publication Date:

March 19, 2015

Filing Date:

July 25, 2014

Export Citation:

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Assignee:

FUJIFILM CORP (JP)

International Classes:

A61B1/00; A61B1/04; A61B1/06

Foreign References:

JPH0380834A	1991-04-05
JPH06315477A	1994-11-15
JP2012066065A	2012-04-05

Attorney, Agent or Firm:

ODAHARA Shuichi et al. (JP)
Shuichi Odawara (JP)

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