From the NICE website:
“NICE publishes its first Medtech Innovation Briefings today (Tues 4 February) on a range of novel technologies: a device to cool the brain in patients who've suffered a heart attack, a system for measuring narrowing of arteries in people with angina, a hydrosurgery device for cleaning wounds and a test to diagnose kidney damage.
The NICE briefings … include the likely costs of using the technologies and a review of relevant published evidence, but they are not NICE guidance and do not make any recommendations on the value of using the technologies.”
If you are more interested in the methods and process, then details are available here.