contraindications mri medical patients metallic nrt known claustrophobia use pancreatectomy 
clips metal aneurysm mri implants pacemakers metallic devices objects ferromagnetic 
injectables combined implants contraceptives devices partner iuds intrauterine condoms oral 
implanted devices electronic device pacemakers pacemaker defibrillators defibrillator stimulator brain 
implants breast metal metallic bilateral patients mri contraindicated reconstruction women