Nuclear magnetic is also known as magnetic resonance imaging (MRI), two years after the atrial defect sealing surgery can do MRI is mainly related to the materials used in the repair, if it is metal materials can not do MRI, but if it is a biological material can do MRI. 1. Can not do MRI: the principle of MRI is through the body’s hydrogen nuclei in the magnetic resonance instrument powerful magnetic field space resonance, and through digital reconstruction technology into magnetic resonance images, so as to provide to the clinical diagnosis of disease. If metal materials are used in the atrial defect blockage surgery, then MRI cannot be done, which will likely affect the results of the examination, and it will also cause damage to the patient’s body. 2. MRI can be done: if biological materials are used in atrial defect occlusion surgery, then MRI can be done and it will not have any effect on the examination results. It is recommended that you should consult your doctor before you want to do any examination two years after atrial defect occlusion surgery to avoid adverse consequences.