Hi all, is there anyone known multi-modal medical image fusion project,like CT/PET, CT/MRI and so on?

Now I want to reseach the multi-modal medical image fusion, i want to find an open source project as first.

3D Slicer is the probably most comprehensive open-source multi-modality medical image visualization and analysis application. Its visualization and data model are all based on VTK.

OKļ¼Œthanks!!!