Fig. 4.

Fig. 4.

Cross sectional and en face images of the postmortem zebrafish. In (a)–(c), the orange arrowheads denote the approximate focal positions, and the magnification insets are supposed to show notochord structure. The black arrows in (a)–(c) and (g)–(i) may indicate the myosepta. In (d)–(f), white dashed areas denote the belly region, and blue dashed ellipses mark fine structures observed in the muscle region. The green arrowheads in (d)–(f) and (j)–(l) may indicate the outer layer of the swim bladder. In (g)–(i), yellow dashed circles denote several hyper-scattering spots observed in the belly region. In (j)–(l), white ellipses denote unidentified structures that are better contrasted in the MFA image, and small red boxes indicate two selected regions for computing SBR. At all depths, the MFA method has the images with best contrast among the three methods.