Magnetic resonance imaging (MRI) is a safe and painless test that produces clear cross-sectional or three-dimensional images of the body’s tissues, even through bone and other obstructions. Because of its safety and clarity, the MRI is a valuable tool that can aid in the diagnosis of a wide range of conditions, including internal injuries, joint and bone disorders and various diseases, such as arthritis and cancer. The only preparation for an MRI involves removing all metal objects, such as jewelry, from the body.

MRI is used to detect abnormalities or problems in nearly every part of the body, including:

• Musculoskeletal system
• Blood vessels
• Head and brain
• Heart and chest
• Abdomen and pelvis

Because the MRI test relies on a large magnetic field, certain people should avoid the test. These include patients with implanted pacemakers and implantable cardioverter defibrillators (ICDs). Patients with certain other medical implants should consult a physician to find out if an MRI is allowed. In all cases, patients should inform the physician or technician of any metal objects present in their bodies. Pregnant women should generally avoid MRIs because the risk to the fetus is unknown. However, there may be some instances when an MRI is warranted in pregnant patients.

Patients who are nervous in small spaces may wish to ask their physician about the possibility of receiving a sedative during the procedure, which may take up to one hour or longer in a tight space. Using a less enclosed type of MRI machine may be another option. If patients receive a sedative, then they will need someone to drive them home from the test. Otherwise, patients are free to go about their daily activities after the test is completed.