A SPECT diagnostic method of performing myocardial perfusion imaging on a patient, the method comprising the steps of: administering a rest radiotracer to the patient while the patient is at rest scanning the heart of the patient, with the patient positioned at a scanning position, to obtain a rest perfusion image administering a stressing agent to the patient to place the patients heart under stress administering a stress radiotracer while the heart of the patient is under stress scanning the heart to obtain a stress perfusion image maintaining the patient at the scanning position from the commencement of the rest perfusion image through the completion of the stress perfusion image.
