Abstract
Digital twins, a virtual representation that is essentially a real-time digital counterpart of a physical object or process, first originated from NASA in an attempt to improve the physical model simulation of spacecraft in 2010. Since the explosion of the Internet of Things (IoT), digital twins have become cost-effective and have been used successfully in manufacturing and service sectors to revolutionize these sectors. It is no surprise, then, given the benefits, digital twins have brought to manufacturing and service industries that one can imagine that similar benefits could be realized in health care. This chapter serves to outline how and why we might want to conceptualize digital twins for health care.