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Comparison of the ability of micro CT to show surface features with the superior ability of scanning electron microscopy (SEM). Inset upper right shows stone with apparent Randall’s plaque umbilication (arrowhead). Inset upper left shows micro CT surface rendering from an image stack (with 5.9 μm cubic voxels). The plaque region is recognizable in the micro CT surface rendering but is unable to show the detail apparent by SEM (background and inset lower right).
