MRI Dorso-lumbar without contrast is a non-invasive test that does not involve radiation. However, the test may not be suitable for patients with certain medical conditions, such as claustrophobia, or with implanted devices, such as pacemakers. Patients should inform their healthcare provider of any medical conditions, allergies, or implanted devices that may interfere with the test. They should also remove any metal objects, such as jewelry or clothing with metal zippers or buttons, and change into a hospital gown before the test.