Figure 4. Images were resampled to correct the irregular data density of the raw scans. The Z axis (vertical axis of the image) is fixed at 1,024 reflectance measurements along a 2 mm line. A X,Y scanning pattern was optimized for the body of the animal, with a X,Y a-scan density of 501x180, yielding the uncorrected aspect ratio observed in the left frame. Scan data were resampled, utilizing spline interpolation, to produce images with a 1:1 aspect ratio for structural measurements and visualization.