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Navigation:  Volume-of-Interest (VOI) Analysis > Using Contour VOIs > Adjustment Tools for Contour VOIs >


The Erosion/Dilation of VOI function


is useful for shrinking or inflating VOIs. It shows the interface described for the morphological operations


When applying an operation, the VOI is converted to a binary image, the operation applied, and then contouring applied to get a contour VOI. Therefore, object VOIs are converted into contour VOIs. The resulting VOI replaces the original VOI. Note that the operations can be applied to a whole group of VOIs at the same time.