Iv starts for CT and MRI

Recently started new role in Radiology Dept. after 26 yrs Critical Care- Love the Job but the "Learning Curve" can be difficult when you have been in your comfort zone for a long time. Still trying to get used to the outpatient reqiurements. So the CT techs want me to start all IV's which I don't have a problem with but I do it per our hospital policy- with a sterile occusive dressing over the insertion site. CT just wants tape over it "because it is only in for few minutes" and the dressing is too hard to remove.Anyone out there who can give me some feedback on what other facilities do for these "short term" IV sites when it comes to dressing them? Know I'm wordy but it is my first time posting a thread. Hate to make waves my first month on the job but what do you do??