Hi John
Things are developing at a pace in this area, with the advent of Low Dose Digital Modalities.
You will find many manufacturers produce in effect a stand alone, even mobile cath lab.
The possibilities are many and you could end up saving your Trust a fortune and delighting a whole bunch of Surgical and X Ray practitioners, of course, the danger is, you might do the opposite.
I favour certain suppliers and configurations, a integrated soution for today and the future, theres a lot to consider, should you need any assistance Id be glad to help.
Darren