CAD tip # 13131:

The standard functions for embedded images in Revit and Revit LT do not offer the crop function. However, you can easily help yourself with the view functions.

1. Use the "Duplicate View" function to create a copy of your view, such as a floor plan.
2. In this copy, use "Override visibility/display" (see Properties-Graphics) to turn off the visibility of all categories (they may be in multiple tabs), except the "Raster Images" category.
3. Then, in that copy, use the crop view function to create the desired crop of your image (the view contains only that image). You can use any shape for the crop border, not just rectangular trimming (see the Edit Profile context ribbon).
4. Then use the cropped raster image (view) on your drawing sheet.