Development of near-infrared light endoscope for early detection of GIST

-Verification of identification accuracy in change of wavelength and spatial resolution-

Abstract

Near-infrared light has the wavelength between about 800 nm and 2500 nm. It does not affect body badly and has less absorption and scattering than visible light. For this reason, near-infrared light has been applied in the medical field in recent years. Near-infrared light endoscope which is one of medical devices that have a great potential as the surgery supporting system. Therefore, this study focused on the endoscope using near-infrared light. However, the image fiber used for the Near-infrared light endoscope is different in wavelengths resolution and spatial resolution from near-infrared camera used in the current research. In this study, the identification accuracy of gastrointestinal stromal tumor (GIST), which is a type of sarcoma located under a mucous membrane was verified at the same wavelength resolution and spatial resolution as the image fiber.