A ICU (and intern year in general) is good in theory and lot of 'higher ups' think these things are valuable, but imho it is practically a complete waste of time the way it is currently done. As an intern, you go into survival mode where your main goal is to get work done and 'do no harm'. You are taught stuff in such a way that is important to many other fields of medicine, but not radiology. You don't know what is important to know for radiology and your attendings/senior residents/fellows either don't know or will not spend a sufficient amount of time to teach you these things. It is helpful to know their perspective, but you will have no or little idea on what you should key-in on. The things you do learn, will either change (management algorithm) and/or you will forget the fine details because you will not use any of it on an every day basis. Intern years are designed for medicine/surgery and their subspecialties....
The number of radiology films and variety of pathology you see during a month of ICU is very small in the grand scheme of your radiology career. You will learn just as much after 2 or 3 days on chest during your first chest rotation.
Sure, the first few months or year you may be able to "help" if someone codes. But, eventually you will become rusty and forget stuff because you will not be using those skills every day. In "real life", if someone codes you will be doing "the minimal", perhaps managing contrast reactions (which you will learn during radiology residency anyway) and then calling for help, and they will take over. You won't be running codes as a radiologist.
"Intern year" for radiology would be much better if it was done after you have had a couple years of radiology under your belt and you rotated with the team and acted as a consultant (as PharmDs do). Not only would you be able to more intelligently discuss the radiology findings of the patients, but you would be able to better key in on the what is important for you to learn and what information is important to your ordering clinicians. Both sides would benefit.