If your facility uses a Siemens cath/angio lab like the Axiom Artis, the Multistar, or the Angiostar, you've got a Megalix X-ray tube. As with any X-ray tube, the Megalix will require replacement from time to time. When you start to shop around for your replacement, you're likely to come across a variety of product descriptions for the types of Megalix tubes in circulation. These descriptions are made up of numbers and abbreviations that might not make a whole lot of sense at first. We've broken down what they mean so that you can be more informed as you make your next major component purchase.