How to sum (or average) scalar volumes of a dynamic PET study?

Dear all,
is there anybody who can give me a suggestion on how to sum the different time-point images of a 4-frame dynamic PET scan I loaded from DICOM importer, and result in a single “static” scan?


Have you tried the “Add Scalar Volumes” module? It’s in the category Filtering / Arithmetic.

Thanks for the clue! I separated out the four frames and then I summed them up…