We had a lung CA patient come in for a CT Abd/Pelvis w/wo contrast. She said her veins were not accessible and we could use her port.
She had an identification card in her wallet explaining the safety of pushing contrast through it with a power injector. The feel of accessing is the same as with any port. You have to use a huber needle specifically make for use with the power port. Afterwards flush and heplock.
When I checked with the surgeon who had inserted the port he told me that he is exclusively inserting power ports and that we should expect to see alot more of them. I could not find a link on the particular model that she had but this one is very similar.