How to install SlicerDRRGenerator extension in to Slicer

I want to create DRR image from CT scan.
I found SlicerDRRGenerator, but I don’t know how to install it to Slicer…
I used the Extension Wizard. The extension is not fully installed. The GUI differs from the one in the published paper by the developer.
If the extension is not working, is there any method to create DRR?

A post was merged into an existing topic: Generate digitally reconstructed radiograph from 3DCT