Hundreds of thousands of Americans enter a cardiac catheterization lab each year for a heart stent procedure, something that can be made easier for doctors with holographic, 3D medical imagery that comes to life with mixed-reality smartglasses, researchers say. The technology was just one of the innovations unveiled at Philips Cambridge Research Center this week. When a doctor puts the Microsoft HoloLens glasses on, holographic screens displaying a patient’s vitals and other crucial information appear. “The ability to move your…