Choosing Between An Open Or Closed MRI

Magnetic resonance imaging, or MRI, is a noninvasive way for a physician to see what is going on inside a patient's body. An MRI uses radio waves and a powerful magnetic field to create cross-sectioned images of tissues, organs, and the skeletal system. Unlike CT scans and X-rays, no harmful radiation is utilized, which is better for the patient and the technicians involved. MRIs are used to detect abnormalities in the spine, head, eye, and inner ear. They can also be useful in showing if a person has had a stroke or is susceptible for developing heart problems. 

Traditionally, a 'closed' MRI machine is used, which can cause even the bravest patient to experience claustrophobia. For the test, the patient has to lay down in a tube-shaped device that is 24-28' across. Even if they are given headphones to listen to soothing music and/or a sedative medication like Valium, many people report having panic attacks or being unable to complete the test. Closed MRIs typically take less time to finish the scan, and, in some cases, produce more detailed images for the doctor to evaluate. For an MRI to work properly, the patient must stay very still, which can be a tall order to fulfill if you are feeling claustrophobic. Closed MRIs can be uncomfortable for larger patients as well.

Open MRI machines, like the name indicates, do not enclose the patient in a tube like the closed MRIs do. There is a separate top and bottom magnetic area; the open space in between often alleviates anxiety for claustrophobic patients or patients who are experiencing severe pain in certain areas. For situations that call for an extremity to be scanned, like a patient's wrist, hand, shoulder, or foot, open MRIs can center the subject better. Open MRIs are more convenient for older patients and children, because they allow for a caretaker to be present to comfort the patient. Contrary to what some people think, open MRIs use magnetic imaging that is just as powerful as closed MRIs.