Discrimination of Nasopharyngeal Carcinoma from Noncancerous Ex Vivo Tissue Using Reflectance Spectroscopy

Figure 4

A two-dimension scattered point diagram of the PCA result for NPC group (red triangles ▲) and noncancerous group (blue circle ●). The dotted lines (0.738 PC3 + 0.836 PC6 + 0.017 = 0) served as a diagnostic method for NPC sample and noncancerous sample differentiation.