Short-Wavelength Infrared Hyperspectral Imaging to Assess Gastrointestinal Stromal Tumors During Surgery

Takamatsu, Toshihiro, National Cancer Ctr.; Ikematsu, Hiroaki, National Cancer Ctr.; Takemura, Hiroshi, Tokyo Univ. of Information Sciences; Yokota, Hideo, RIKEN Ctr. for Advanced Photonics; Soga, Kohei, Univ. of Tokyo

doi:10.1117/3.2604326.ch10

Book: Short-Wavelength Infrared Windows for Biomedical Applications

Editor(s): Laura A. Sordillo; Peter P. Sordillo

Chapter Author(s): Toshihiro Takamatsu, Hiroaki Ikematsu, Hiroshi Takemura, Hideo Yokota, Kohei Soga

Published: 2021

https://doi.org/10.1117/3.2604326.ch10

Author Affiliations +

Abstract

Shortwave infrared (SWIR) light is in the wavelength range of 800–2500 nm. It is well-known as noninvasive light because its energy is lower than that of visible and ultraviolet light. In addition, it is characterized by small light loss owing to its low level of absorption and scattering of water and biomolecules in tissue. Therefore, it has a higher bio-transparency than visible and ultraviolet light. In particular, the SWIR region—excluding the areas around 1450 and 1900 nm, where absorption by water is strong—is termed a “biological window” because of its low optical loss.