Fig. 5.

Representative OCT images of pig spleen acquired with a 22-gauge OCT needle. (a) Needle was slid on the tissue capsule. (b) Needle was inserted and retracted from the tissue. The inset shows a two times magnified area marked by the dashed rectangle. The OCT signals exhibit different depth-dependent decay in (a) capsule and (b) pulp, indicating different optical properties of different tissue components.