Image Filters
To apply image filters:
On the smart panel, select the Viewer 
tab.
In the Image Filters group, click the filter(s) to be applied to the image data. Click the down arrow 
below the image filter and use the slider to set the filter percentage. Filters can be applied to a reslice, a 3D OPG or a 2D grayscale image. Click outside the menu to close the filter.
Note
Optionally, use the shortcut [E] to apply or undo the crisp filter.
Multiple filters can be selected. The filters are applied per image per diagnosis. To set default filters for a certain image type, see Image settings.