Figure 5.

GERTs‐guided positioning of SLNs for minimally invasive surgery. A–D) The schematic of GERTs‐guided preoperative accurate location of SLN and minimally invasive surgery. E–H) Detection of Raman signals in the empirically predicted sentinel node region. Positive GERTs signal position marked as a cross (blue or black). I) Corresponding Raman spectra of skin‐covered negative (e.g., points 3 and 6) and positive points (e.g., point 7 and 11). J) Raman spectra of additional 4 points (point 17 to 20) around the positive points indicated in panels (C) and (G), measured through the skin. K) Raman spectra of five representative points on the SLN after removing the skin. The scale bars are 0.5 cm.