Fig. 3.

(a) Ex vivo coregistered PAT/US image of a premenopausal benign ovarian tissue and (b) ex vivo coregistered PAT/US image of a postmenopausal malignant ovarian tissue. In (a) and (b), the annular fan shapes define the region of beam spectrum feature extraction. (c) The spectrum (blue) and linear fitting (red) of PAT beam of the benign ovarian tissue, (d) the spectrum and linear fitting of PAT beam of the malignant ovarian tissue, (e) the spectrum (blue) and linear fitting (red) of US beam of benign ovary, and (f) the spectrum and linear fitting of US beam of malignant ovarian tissue.