Fig. 5.

Rendered 3-D PA images of pigmented skin lesions taken using a stepper motor. (a) Large diameter melanoma in situ located on ventral aspect of wrist. (b) 3-D PAI scan ($\text{area}=14\mathrm{mm}\times 235\mathrm{mm}$) of dashed region in (a) showing complex pigmentation pattern. (c) Compound melanocytic nevus located on lower left extremity. (d) 3-D PAI scan ($\text{area}=4\mathrm{mm}\times 4\mathrm{mm}$) of lesion in (c). 3-D PA scans assessed lesion volume and allowed for the thickest portion to be registered to the surface, which can potentially guide incisional biopsy location and depth.