Fig. 6.

Comparison of speckle reduction using DL-TNode-3D and cGAN-2D for the ventral nail bed volume acquired using the polygon-based system. Orthogonal views where $z$ is depth and $x(y)$ is the fast (slow) axis direction. DL-TNode-3D produces OCT volumes close to the ground truth without any visible artifacts along the out-of-plane axis, $y$ . Contrast-enhanced boxes show superior speckle suppression ability of DL-TNode-3D compared to cGAN-2D, which exhibits high-frequency artifacts along the slow-scan axis. Magenta and violet rectangles represent the two tissue types used for calculating CNR. Scale bars = 0.5 mm.