Magnetic Resonance - MR
Magnetic Resonance Imaging
Magnetic Resonance (MR) does not use radiation to produce images of the
body. MR uses a process of passing radio waves through a powerful magnetic
to generate images of the body. The various body structures produce differing
frequencies of radio waves and these are picked up and converted into
digital images by a computer. MR can image virtually any part of the body
but it is especially good for imaging soft tissues such as the brain,
spine and joints as well as the venous and arterial systems.
For all MRI examinations, patients routinely change into a procedure gown
and are laying on a table. Prior to starting the procedure, the technical
staff will place a device called a “coil” over the body part
to be examined. The coil is a device that sends and receives the radio
frequency waves during the examination. As the procedure starts, the table
will move into the magnet. During the procedure, the table my move and
you will hear a variety of noises ranging from a humming to a loud knocking
sound. These are all normal sounds and you will be provided with earplugs
and headphones to diminish the impact of the noise. The particular examination
you are having may require the injection of contrast material through
a vein in your arm and the technical staff will explain that process to you.
During the procedure it is important that you hold very still in order
to obtain the best possible images. MR procedure time can range between
30 – 60 minutes. The technical staff will be able to communicate
with you during the procedure via a microphone in the control room. You
will also be provided with a push button hand held communication device
in the event you need assistance from the technical staff. The technical
staff will explain the use of that device with you prior to starting the
Most MR examinations do not have specific dietary restrictions or other
physical preparations. However, when your procedure is scheduled, our
staff will review with you all preparation information that may apply.
Due to the strong magnetic field, there is a detailed screening protocol
to make sure there are no metal objects (loose or implanted within your
body) that may pose a safety hazard to you, our staff or to our equipment.
The technical staff will review this process with you in detail prior
to entering the MR procedure room.
For patients that are anxious or that may suffer from claustrophobia and
have concerns about holding still during the examination, a family member
or friend can remain in the procedure room for support and comfort.
Some patients may require a mild anxiety-relieving medication to assist
with the anxious feeling or claustrophobia. This can be prescribed for
you by your physician if necessary.
Procedure Side Effects / Complications
Magnetic Resonance (MR) does not cause any known side effects. For patients
that may be pregnant, it is important to notify the staff. Although there
are no known effects on the fetus, your scan may be modified or scheduled
later in your pregnancy.
Some patients may experience a ringing in the ears following the procedure
but this is temporary and should pass quickly. The earplugs and headphones
used during the procedure should minimize the ringing in the ears following
Upon completion of your Magnetic Resonance (MR) examination, there is generally
no follow-up care required.
All radiology procedures are scheduled through our Centralized Scheduling
Department. The highly trained and knowledgeable staff will handle all
aspects of scheduling your radiology procedure and answer any questions
you may have regarding the scheduling or procedure preparation process.
To schedule a radiology procedure you can contact our staff as follows:
Centralized Scheduling: 909.469.9395
Hours: Monday – Friday / 8:30 am. – 5:00 pm.