Endoscopic Raman Spectroscopy for Molecular Fingerprinting of Gastric Cancer: Principle to Implementation

Figure 2

Near-infrared Raman spectrum. Near-infrared Raman spectrum of cholesterol indicating typical vibrational bands. The background has been removed by subtracting a fourth-order polynomial fit to the raw spectrum (adopted from Hanlon et al. Phys Med Biol 2000; 45: R1-59) [27].