*For ports, first inject a small amount of contrast to and image when contrast fills the port '''chamber and the catheter''', to exclude malfunction.<ref name=Helsingborg/>
*Imaging of the '''outflow''' from the catheter is done at 10-15<ref name="Frequency" group="notes">A frequency of 2-4 images per second has also been suggested (Knutstad, 2016), which confers a lower radiation dose but makes it more difficult to determine the dynamic flow of contrast.</ref> images per second.<ref name=Helsingborg/>
*After the procedure, the system should be '''flushed ''' with 20 - 30 ml normal saline.<ref name=Helsingborg/>
==Evaluation==