| 摘要 |
The light source device has a wheel holding a blue filter, a green filter, a red filter, and a transparent member so as to sequentially and repeatedly introduce blue light, green light, red light and excitation light into an illumination optical system of an endoscope. An objective lens of the endoscope forms an image of a subject irradiated with the above light. An imaging device converts the image of the subject into an image signal. A video processor receives this image signal and generates normal image data and fluorescence image data, which are to display the image as moving picture. Furthermore, a PC executes image processing to extract a specific region having an illuminance value within a predetermined range from fluorescence image data, thereby generating diagnostic image data to display a diagnostic image in which that portion of the normal image data corresponding to the specific region is shown in blue.
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