MRI (Magnetic Resonance Imaging)

What Parts of the Body are Imaged during an MRI?

MRIs are typically used to image the head, neck, spine, abdominal organs, pelvis, and extremities (arms, legs, hands, feet). Because MRI’s are very part specific with limited fields of view, technologists cannot do an MRI of the “leg”. The leg could be the hip, femur/thigh, knee, lower leg, ankle, foot and the physician’s order will be specific as to which part needs imaged.

How Long does an MRI Take?

The length of an MRI can vary based on many factors. MRI’s are typically about 30 minutes per body part for scan time with some being less while other scans could take up to an hour.

How do you Prepare for an MRI?

Typically, the MRI department will contact patients prior to an MRI appointment to go over specific MRI safety screening questions that may prevent someone from having an MRI. These safety questions will also give the MRI department time to investigate other potential safety concerns with anything a patient may have implanted within the body. It is also an opportunity to give patients specific instructions if necessary. On the day of the exam, a technologist will again review the screening questions with patients face to face to ensure their safety and answer any questions prior to testing. Metal objects are generally incompatible with the magnetic fields and therefore all jewelry, watches, coins, keys, cell phones and credit/debit cards should be left at home or placed in a locker prior to entering the MRI scan room. Depending on the body part being scanned or the clothing you are wearing, you may also be asked to change into hospital pants or gowns for your exam. Because the MRI is a very powerful magnet, MRI staff are highly trained individuals who work diligently to ensure your safety.

Are there any Restrictions as to Who Can Have an MRI?

An MRI may not be possible or appropriate for everyone. People who have implanted objects in their body such as a cardiac pacemaker or defibrillator, spinal cord stimulator, cerebral aneurysm clips, cochlear implants, as well as other devices must alert the MRI department during the initial screening process. Some facilities do not have the capability to perform these types of exams. If the location is able to perform the exam, this will allow the technologist’s time to look into the device conditions and verify if the MRI scanner to be used can safely meet the specified conditions of the device manufacturer.

What Happens if you Become Uncomfortable During the MRI?

Patients are in constant contact with the MRI staff during the exam and are given an alarm ball to hold throughout the exam. If a patient has a problem, they can squeeze the ball to alert the technologist there is an issue and the technologist performing the test can stop the exam and have the patient out of the MRI scanner in a matter of seconds. The technologist watches the patient and also verbally checks the status of the patient between sets of pictures throughout the exam.

Can someone stay with me during the MRI?

Typically due to safety concerns, MRI staff are reluctant to allow visitors other than patients into the MRI scanner room. However, it is permissible in some cases especially with children or those who are extremely claustrophobic.

Are there any restrictions following an MRI?

Most people can resume their normal daily activities following an MRI unless they have been given a sedative or medication. People who are given medication or a sedative must have a driver. Also, if a patient receives MRI contrast there should be a 24 hour wait prior to having bloodwork drawn.