the Accuracy and Safety of Coronary Artery Contrast-enhanced Magnetic Resonance Imaging With Polysaccharide Superparamagnetic Iron Oxide Nanoparticle

Exclusion Criteria

• •Patients who were allergic to iodine contrast agent or had allergic history or allergic constitution to iron and dextran;
• •Patients who can ' t accept magnetic resonance examination because of psychological ( such as autism syndrome ) or physical reasons ( such as metal retention in the body );
• •Malignancies or other comorbid conditions with life expectancy less than 1 year;
• •Pregnant or lactating woman;
• •Hearing impaired persons;
• •Cardiac function grade III-IV;
• •History of coronary stenting or coronary artery bypass grafting;
• •Patients who were taking other iron agents orally or intravenously;
• •Patients with hemosiderin deposition or hemochromatosis;
• •Patients with acute coronary syndromes;
• •Any other patients that researcher deems it's unsuitable to be admitted.