Sign-up for Google Reader or Bloglines, find the best blogs (or whatever) that are related to your particular IT interests. Another decent source are the
sub-reddits (I follow the
python one some).
Hacker News is good for mostly for programmers, infrastructure folks, and people interested in starting tech startups.
I just looked up PACS, and I'm not sure what tools you'd be using. Wikipedia says that you might be using LAN/WLAN, Java, ActiveX (please tell me this isn't so) and .NET. Is that right? Can you be more specific?
What aspects are you interested in? Do you want theory and practice, or mostly one or the other?
The links I gave above aren't going to be the best filter, but if you start with a couple of specialist blogs you can build a core of people that will act as filters to find the stuff that you really care about.