Rapid pathologic grading-based diagnosis of esophageal squamous cell carcinoma via Raman spectroscopy and a deep learning algorithm

Figure 7 Corresponding histopathological images and Raman spectrograms with their corresponding spectral ranges superimposed of the three histopathological grading states of esophageal cancer. A-C: The corresponding histopathological images of the three histopathological grading states of esophageal cancer: Healthy tissue, low-grade pathological tissue, and high-grade pathological tissue; D-F: Raman spectrograms of healthy, low-grade and high-grade lesions, respectively, with their corresponding spectral ranges superimposed.