MRI examination precautions include the following: 1, the patient’s state of preparation: brain, pelvis, pelvis, joints and other examinations do not require fasting, but the abdomen, especially when performing hepatobiliary examination, requires fasting preparation in order to fill the gallbladder and facilitate the understanding of the gallbladder and liver, except that fasting is generally not emphasized; 2, communicate with the doctor about specific matters: before the patient does the examination, he or she can communicate with the doctor about examination matters or questions, but needs to choose the right time and pay attention to the method of communication with the doctor.