Extended Data Fig. 5: mμSORS spectra of 10 groups partitioned by equal binning of VPG levels.
From: Subcutaneous depth-selective spectral imaging with mμSORS enables noninvasive glucose monitoring
a, Average spectra in the range of 800–1,500 cm−1 for each of the 10 VPG-spectra groups (Fig. 2e) at different offsets in the preliminary BESH of 35 subjects. The black arrow indicates the phenylalanine Raman peak at 1001 cm−1, while the red box indicates the characteristic glucose Raman peak at 1,125 cm−1. b, Normalized Raman spectra (glucose Raman band divided by phenylalanine Raman band) of different offsets averaged over each of the 10 VPG-spectra groups (Fig. 2f), zoomed in around the glucose Raman peak at 1125 cm−1.
