Fig. 4From: Hybrid optical parametrically-oscillating emitter at 1930 nm for volumetric photoacoustic imaging of water contentPA image of (a) water acquired by 1930-nm OR-PAM and b lipid acquired by 1750-nm OR-PAM; c Overlaid PA image of (a) and (b). d Photography of the adipose tissue. e–f Three-dimensional rendering view of (a, b). Scale bars, 500 µmBack to article page