A CT is not a very long procedure, and the scanning time for different parts of the body is limited to 5-10 minutes. Before doing CT, you need to make an appointment first, and after making an appointment, you will queue up at the hospital according to the appointment time, and only after queuing will you enter the machine room. The patient needs to change into clothes without metal foreign body, lie on the bed with the assistance of the doctor, set up a fixed position, the family and the doctor leave the machine room, the patient will be CT positioning scanning, the whole scanning time will not be more than 5-10 minutes. But if the queue is long, the time may be longer.