MRI can examine two areas at a time, or even 3-4 areas or more. Because MRI is a radiation-free and green examination method, it is not limited by the number of examinations or the interval between examinations or examination areas. Magnetic resonance examination is mainly used in the examination of central nervous system, digestive system, pelvis, genitourinary system and bone and joint system, such as cerebral infarction, cerebral hemorrhage and cerebrovascular malformation, when patients often undergo cranial magnetic resonance flat scan plus cranial cerebral angiography. For example, patients with abdominal bile duct stones will often undergo upper abdominal MRI plus pancreaticobiliary water imaging, when two or more sites and more examinations are required. During the examination, it is important to first explain your status to the MRI room staff, such as whether the patient has a pacemaker, aneurysm clips, titanium clips, insulin pumps, etc., which can affect the safety of the examination. When doing an MRI, for example, if you want to do a head MRI and then a knee MRI, you may arrange for the patient to have a head exam first, and then immediately afterwards you will change the coil and bring the knee coil for the knee MRI. In fact, although there are two parts, they are not examined at the same time, but first and second, so the cost of MRI as a major medical examination is relatively high. If two or more parts of the MRI are examined in separate parts, the price charged will be doubled. Patients should follow the clinician’s instructions for the examination according to their medical needs.