Figure 5.

Relative SO₂ levels in normal pancreatic regions in three different mice. SO₂ was calculated as the percentage of oxygenated hemoglobin relative to total hemoglobin based on dual-wavelength PA imaging at 750 and 850 nm. (A,E,I) PA images acquired at 750 nm overlaid with grayscale US B-mode images. (B,F,J) PA images acquired at 850 nm overlaid with grayscale US B-mode images. (C,G,K) Calculated SO₂ dynamics overlaid with grayscale US B-mode images. (D,H,L) C-scan image of SO₂ dynamics overlaid with US. Rotational 3D images can be seen in Supplementary Materials Video S1.