Magnetic
Resonance Imaging (MRI)
MRI
Information for Patients who Experience Claustrophobia
MRI Patient Information
What is a Magnetic Resonance Imaging (MRI)
An MRI is an imaging machine that uses a large magnet,
a computer, and radio waves to look inside the body and
to evaluate various body parts, such as the brain, neck,
spine, abdomen, etc. It is can also be used to evaluate
many blood vessel disorders by using special non-invasive
imaging techniques known as MRA, Magnetic Resonance Angiography.
MRI
is painless; it requires minimal preparation, and it can
lead to early detection and treatment of many health problems.
Why
do I need an MRI
There are many reasons why your physician may order an MRI.
Indications may include: Back pain, recent spine or joint
injury, headaches, dizziness, stroke, metastatic disease,
and abdominal or pelvic pain.
Will
my insurance pay for an MRI?
Most insurance companies require pre-authorization for an
MRI exam. This means that your physician must call your
insurance company in advance and obtain authorization number
to assure that they will pay for the test. For specific
information about insurance coverage or for payment questions,
please contact your insurance company directly.
What
happens during the procedure?
During the MRI exam, you will be lying on a firm table.
The technologist will position you on the table and then
move the table to the center of the MRI machine. The inside
of the machine is like a giant tunnel that is well lit and
open on each end. The MRI makes a loud knocking noise while
we take the image. For your comfort, you will be given ear
plugs or ear phones to listen to music during the exam.
The test takes approximately one hour. When the test is
finished, you are free to go. The Radiologist will interpret
the pictures and send a report to your physician.
Does
the MRI exam require any needle sticks or injections?
The Radiologist is the physician responsible for interpreting
the MRI pictures and he/she also determines whether or not
you need to be given an MRI contrast injection during your
test. When needed to help make a diagnosis, an MRI contrast
agent is given to improve the quality of certain images.
MRI contrast reactions are rare and usually no more severe
than a headache. If your exam requires the use of an MRI
contrast agent, the technologist or nurse will start an
IV before or during the exam and administer the contrast.
How
do I prepare to have this exam?
Because we use a large magnet in the MRI, no metallic objects
or mechanical devices can enter the imaging room. You may
want to keep this in mind when deciding what to wear to
your MRI appointment. Below is a list of suggestions to
help you prepare.
Clothing:
Wear something light weight and comfortable that is easy
to take on and off. Avoid wearing clothing that has a lot
of metal snaps, zippers or hooks.
Jewelry:
All metal jewelry and watches must be removed.
Hair
products:
Many hair products, such as "Topik" to cover hair
loss, or attachable hair weaves contain magnetic particles,
and they must be removed.
Hair
accessories:
Any hair clips, ties, or pins that are made of metal or
have metal parts on them must be removed.
Make-up:
Because some make up, particularly mascara, is made with
a metallic base, it is best not to wear much make up the
day of your appointment.
Dental
devices:
If you wear dentures, or partial dental plates, they must
be removed.
Medication
& diet:
You may continue to take any routine medications prescribed
by your physician and there are no dietary restrictions
unless you are scheduled to receive medication for claustrophobia,
pain, or general anesthesia.
Special
considerations:
Because we use a strong magnet in the MRI, patients who
have pacemakers cannot have an MRI exam. You will be asked
to complete an MRI Patient Screening form prior to your
exam. Additional information or testing may be needed prior
to your MRI exam to ensure that it is safe for you to have
this test:
1)if
you have any other implanted medical devices such as cochlear
implants, penile implants, aneurysm clips, artificial heart
valves, or stent.
2)if you have ever been hit in the eye or face with metal
or metal shavings, or shot with a gun.
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