VOI association can be used in order to establish the default VOIs for images. Select the Dynamic PET in the Series list, and open the association list as illustrated below.
Choose Associate VOI to open a dialog window for selecting a VOI. Preferably it is already available in the database and can simply be selected in the VOLUME OF INTEREST list. Alternatively, Set from File System can be used to point directly to a disk file. Confirm the assignment with Set selected.