Endoscope system, processor device for endoscope system, operation method for endoscope system, and operation method for processor device

Patent metadata

Field	Value
Publication number	US-2016174886-A1
Application number	US-201615058391-A
Country	US
Kind code	A1
Filing date	Mar 2, 2016
Priority date	Sep 26, 2013
Publication date	Jun 23, 2016
Grant date	—

Abstract

Information for assisting a doctor based on the oxygen saturation of an observation target is presented. An endoscope system includes a light source device, an image sensor, an oxygen saturation calculation unit, a distribution pattern generation unit, a disease state score calculation unit, and a monitor. The light source device emits light to irradiate the observation target. The image sensor images the observation target with reflected light of the light, and outputs an image signal. The oxygen saturation calculation unit calculates an oxygen saturation of the observation target based on the image signal. The distribution pattern generation unit generates a distribution pattern showing the distribution of the oxygen saturation. The disease state score calculation unit calculates a disease state score indicating the disease state of the observation target based on the distribution pattern. The monitor displays the disease state score or information based on the disease state score.

First claim

What is claimed is:

1 . An endoscope system, comprising:
a light source device for emitting light to irradiate an observation target; an image sensor that images the observation target with reflected light of the light and outputs an image signal; an oxygen saturation calculation unit that calculates an oxygen saturation of the observation target based on the image signal; a distribution pattern generation unit that generates a distribution pattern showing a distribution of the oxygen saturation; a disease state score calculation unit that calculates a disease state score indicating a disease state of the observation target based on the distribution pattern; and a display unit that displays the disease state score or information based on the disease state score.

2 . The endoscope system according to claim 1 ,
wherein the disease state score in a case in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in a low oxygen region having the oxygen saturation less than the predetermined value is greater than the disease state score in a case in which the high oxygen region is not present in the low oxygen region.

3 . The endoscope system according to claim 2 ,
wherein, in a case in which the high oxygen region is present in the low oxygen region, the disease state score increases as a proportion of the high oxygen region with respect to the low oxygen region increases.

4 . The endoscope system according to claim 1 ,
wherein the disease state score in a case in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in a low oxygen region having the oxygen saturation less than the predetermined value is smaller than the disease state score in a case in which the high oxygen region is not present in the low oxygen region.

5 . The endoscope system according to claim 4 ,
wherein, in a case in which the high oxygen region is present in the low oxygen region, the disease state score decreases as a proportion of the high oxygen region with respect to the low oxygen region increases.

6 . The endoscope system according to claim 1 ,
wherein the disease state score calculation unit compares the distribution pattern with a reference pattern that is a specific distribution shape, and calculates a similarity between the reference pattern and the distribution pattern as the disease state score.

7 . The endoscope system according to claim 6 ,
wherein the reference pattern that is a specific distribution shape is a pattern in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in a low oxygen region having the oxygen saturation less than the predetermined value.

8 . The endoscope system according to claim 1 ,
wherein the distribution pattern generation unit generates the distribution pattern for a region of interest designated in advance, and the disease state score calculation unit calculates the disease state score for the region of interest.

9 . The endoscope system according to claim 1 , further comprising:
a similar clinical data selection unit that compares the distribution pattern with clinical data referring to a database in which a plurality of pieces of the past clinical data are stored in advance, selects similar clinical data which is similar to the distribution pattern among the pieces of clinical data, and displays the similar clinical data on the display unit.

10 . The endoscope system according to claim 9 ,
wherein the similar clinical data selection unit displays an oxygen saturation image included in the similar clinical data on the display unit.

11 . The endoscope system according to claim 1 , further comprising:
a therapeutic effect score calculation unit that calculates a therapeutic effect score, which indicates a therapeutic effect of a specific treatment method, based on the distribution pattern, and displays the therapeutic effect score on the display unit.

12 . The endoscope system according to claim 1 , further comprising:
an autosave control unit, in a case in which the disease state score is a value equal to or greater than a specified value, associating the disease state score with an oxygen saturation image generated based on the image signal and the oxygen saturation and automatically storing them.

13 . The endoscope system according to claim 1 ,
wherein the display unit displays the disease state score or information based on the disease state score in a case in which the disease state score is equal to or greater than a specific value.

14 . The endoscope system according to claim 1 , further comprising:
a feature region extraction unit that extracts a feature region of the observation target based on the image signal, wherein the disease state score calculation unit calculates the disease state score based on the distribution pattern of the feature region.

15 . The endoscope system according to claim 14 ,
wherein the feature region extraction unit extracts the feature region based on a blue image signal obtained from a blue pixel of the image sensor or a green image signal obtained from a green pixel of the image sensor.

16 . The endoscope system according to claim 14 ,
wherein the feature region is a rubor region, and the disease state score in a case in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in the rubor region is greater than the disease state score in a case in which the high oxygen region is not present in the rubor region.

17 . The endoscope system according to claim 15 ,
wherein the feature region is a rubor region, and the disease state score in a case in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in the rubor region is greater than the disease state score in a case in which the high oxygen region is not present in the rubor region.

18 . The endoscope system according to claim 16 ,
wherein, in a case in which the high oxygen region is present in the rubor region, the disease state score increases as a proportion of the high oxygen region with respect to the rubor region increases.

19 . The endoscope system according to claim 17 ,
wherein, in a case in which the high oxygen region is present in the rubor region, the disease state score increases as a proportion of the high oxygen region with respect to the rubor region increases.

20 . The endoscope system according to claim 14 ,
wherein the feature region is a rubor region, and the disease state score in a case in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in the rubor region is smaller than the disease state score in a case in which the high oxygen region is not present in the rubor region.

21 . The endoscope system according to claim 15 ,
wherein the feature region is a rubor region, and the disease state score in a case in which a high oxygen region having the oxygen saturation equal to or greater than a predetermined value is present in the rubor region is smaller than the disease state score in a case in which the high oxygen region is not present in the rubor region.

22 . The endoscope system according to claim 20 ,
wherein, in a case in which the high oxygen region is present in the rubor region, the diseas

Assignees

• Fujifilm Corp

Inventors

• Shiraishi Yasushi

Classifications

• A61B1/044

  for absorption imaging · CPC title

• A61B1/000094

  extracting biological structures · CPC title

• A61B5/14551 Primary

  for measuring blood gases · CPC title

• A61B1/04

  combined with photographic or television appliances · CPC title

• A61B1/00009

  of image signals during a use of endoscope · CPC title