However, the magnetic field generated during an MRI examination is so strong that metal objects or objects with metal in them, such as jewelry, eyeglasses, oxygen canisters, and even wheelchairs, will be pulled toward the machine.
If the rare infection malignant otitis externa is suspected, computed tomography scan (CT scan) or magnetic resonance imaging (MRI) scans will be performed to determine how widely the infection has spread within bone and tissue.
If there is no history of a recent infection, the doctor will order tests such as a commuted topography (CT) scan or a magnetic resonance imaging (MRI) scan to help rule out other possible causes of vertigo, such as tumors.
In addition, it means that usable MRI images can be obtained in a very short period of time (1.5-2 minutes on average) rather than the longer periods of testing required when radioactive materials are used.
Some children will require additional diagnostic imaging procedures, such as computed tomography scan (CAT scan), x ray, and magnetic resonance imaging (MRI), to determine the cause of the macrocephaly and the appropriate treatment.