The test is typically done to evaluate the structure of the thoracic spine for any signs of injury, inflammation, infection, or degenerative changes that may be causing pain, weakness, numbness, or other symptoms.
When this test is required
The test is typically requested by doctors when a person has persistent back pain, particularly in the middle section of the back, as well as other symptoms such as weakness, numbness, tingling, or bowel or bladder dysfunction. It may also be ordered as a follow-up test to other imaging tests such as X-rays or CT scans that show abnormalities in the thoracic spine.
What the Test Detects
The test produces detailed images of the thoracic spine, including the bones, discs, nerves, and surrounding tissues. The images can show abnormalities such as herniated discs, spinal stenosis, tumors, infections, or fractures.
Preparation for the Test
No specific test preparation is needed. However, patients may be asked to remove any metal objects, including jewelry and clothing with metal fastenings, as they can interfere with the MRI image.
Sample Requirements
No sample is required for this test.
Additional Notes
MRI does not use ionizing radiation, so there is no risk of exposure to harmful radiation. However, because the MRI machine uses a strong magnetic field, patients with metal implants or devices such as pacemakers or cochlear implants may not be able to have an MRI. Patients with claustrophobia may also have difficulty tolerating the test, as the machine is enclosed and may feel confining.
