Which test is better, MRI or enhanced CT, depends on the part of the body that the patient is examining and the specific type of disease that is being examined. If the patient has a soft tissue or breast disease and brain infarction is suspected, MRI is generally more effective than enhanced CT, and MRI is not harmful to the body. If the patient is having an examination of an occupying lung lesion, enhanced CT is more effective because MRI does not show the lungs well, and sometimes it is necessary to have an MRI-enhanced examination of the lungs when there is a lung mass and pulmonary atelectasis. If the patient is having an examination of an abdominal occupancy, sometimes MRI and enhanced CT need to be done at the same time, because they provide different information about the lesion.