What are the disadvantages of the CMR technique? The greatest problems limiting widespread dissemination of this technology revolve around reimbursement issues, patient contraindications, physician education, rapidly changing technology, and control of MRI scanners. As of 2003, patients with pacemakers, defibrillators, ferromagnetic brain aneurysm clips, and certain other medical devices should not undergo a CMR scan (24). Although the technology is expensive, MRI scanners can be profitable devices in the treatment of neurological diseases and orthopedics, so it is reasonable to believe the systems could be profitable for cardiovascular diseases, particularly in light of the wide range of cardiovascular applications and the large number of patients requiring evaluation for ischemic heart disease. Other barriers to the widespread implementation of CMR include some significant training issues and the limited number of training centers. Many clinicians find MRI physics to be relatively complicated, and this is further complicated by rapid innovations and technical developments in the field. Finally, disappointing “turf” battles remain between cardiologists and radiologists at many centers.