Patent ID: 11915413
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. An endoscope system comprising:
a light source apparatus configured to be able to emit light in a plurality of wavelength bands to irradiate an object with illumination light;
an image sensor configured to pick up an image of return light from the object on which the illumination light is irradiated; and
one or more processors, each comprising hardware, the one or more processors being configured to:
set, as illumination light for illuminating the object including a biological tissue present in a subject, first illumination light obtained by combining light in one or more wavelength bands selected out of the light in the plurality of wavelength bands and second illumination light obtained by combining light in one or more wavelength bands different from the first illumination light, selected out of the light in the plurality of wavelength bands;
control the light source apparatus to alternately irradiate, from the light source apparatus, the set first illumination light and second illumination light;
determine an analysis result related to presence or absence of an abnormal finding by analyzing a first image obtained by the image sensor when the first illumination light is irradiated and sets, based on the analysis result for the first image acquired by the image sensor when the first illumination light is irradiated, a combination of light in wavelength bands included in the second illumination light to be irradiated next;
set, as the first illumination light, green light and red light selected out of the light in the plurality of wavelength bands; and
analyze the first image to acquire, as the analysis result, an evaluation result relating to which of a color tone equivalent to the abnormal finding and a color tone equivalent to a normal finding a color tone of the first image belongs;

wherein, when a first evaluation result indicating that the color tone of the first image is equivalent to a color tone of a discolored mucous membrane is obtained, the one or more processors set, as the second illumination light, violet light, the green light, and the red light selected out of the light in the plurality of wavelength bands, when a second evaluation result indicating that the color tone of the first image is equivalent to a color tone of a reddened mucous membrane is obtained, the one or more processors set , as the second illumination light, blue light, the green light, and amber light selected out of the light in the plurality of wavelength bands, and, when a third evaluation result indicating that the color tone of the first image is equivalent to a color tone of a normal mucous membrane is obtained, the one or more processors set, as the second illumination light, the blue light, the green light, and the red light selected out of the light in the plurality of wavelength bands.