If "medical grade" refers to radiology diagnostic monitors, the main difference is many are grayscale only and relatively high resolution, up to 5K, with extra calibration hardware integrated. I would definitely NOT want to use them for video editing. As a radiologist who works with video as a hobby (Final Cut Studio, etc.), I am more impressed with my 30" Apple Cinema Displays than any high-end "medical grade" monitors that can cost easily $10,000 (a few years ago we were using CRTs that cost up to $50,000 each!). I personally believe that most of the medical grade computer equipment is outdated by the time they hit the market since the manufacturers have to get FDA approval for equipment and are reluctant to change anything. More likely, any company advertising "medical grade" is just desperate for an unused marketing angle. If it really is FDA approved, etc., and in use, it is simply overpriced. Equipment aimed at hard-core gamers and real video pros give the best performance.
