1. A method of medical imaging, comprising the steps of: transmitting X-ray emissions originating from a first source through a subject; generating a first set of temporally separated images of an area of interest in the subject from the transmitted X-ray emissions; generating a second set of temporally separated images from the area of interest in a second source; combining the first set and the second set to produce combined images of the area of interest; blocking the X-ray emissions from reaching the subject; updating the second set; combining the first set with the updated second set to produce updated combined images of the area of interest; displaying the updated combined images; and when a predetermined condition is satisfied, iterating the steps of updating the second set, combining the first set with the updated second set and displaying the updated combined images.