Fig. 5
From: A new method for quantitative assessment of hand muscle volume and fat in magnetic resonance images

The top row shows the three transversal slices of the distal MCP III joint: a with characteristic rectangular MCP III shape, b with round joint shape and synovial fluid (green arrows) and c with shape of proximal phalange. The bottom row shows three common classification errors, which required manual correction: d shows segmented skin layers between MCP I and II (green arrows), e shows segmented subcutaneous areas close to the MCP III bone (green arrow) and f shows leaking segmentation into joint area (green arrow) and skin (light blue arrows)