In vivo spectra collected during routine ERCP clinical procedures in bile ducts and tissue physiological parameters extracted from DRS.
dysplasia, benign bile duct
INFLAMMATION, DYSPLASIA
Typical white light spectra of benign (When the inverse DRS algorithm is applied to the in vivo reflectance spectra in the 500 nm to 800 nm wavelength range, it provides values for the hemoglobin concentration, oxygen saturation, and scattering power (see Fig. The single backscattering component, on the other hand, depends mainly on scattering in the epithelium. It can be reconstructed from the spatially gated reflectance data in the 600 nm to 800 nm wavelength range, where tissue absorption can be ignored, by employing the procedure described in the Methods section, with the reconstructed single backscattering components for the typical high-grade dysplasia, inflammation, and benign bile duct sites shown in Fig. 