People are working on it, but its a long way from being complete. See, for example, https://www.quantamagazine.org/with-digital-twins-the-doctor-will-see-you-no

People are working on it, but its a long way from being complete. See, for example, https://www.quantamagazine.org/with-digital-twins-the-doctor-will-see-you-now-20240726/ https://www.quantamagazine.org/with-digital-twins-the-doctor... on modeling the circulatory system.