1.In order to consider your condition in all aspects, please bring all previous imaging data (including X-ray, CT, MRI and ultrasound, etc.), various examination data (including blood and urine analysis, etc.) and outpatient or inpatient medical records when you visit us. 2.Please come in the morning as much as possible and keep an empty stomach, because it may be necessary to conduct digestive tract examination. 3.For those who need X-ray examination, please dress as simple as possible, do not wear hard accessories, and please remove any obstacle that may affect our observation and diagnosis, such as plaster. 4.For those who need MRI examination, please do not carry metal objects (keys, cell phones, watches, bank cards, coins, etc.) on your body, especially for those who have pacemakers.