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Magnetic Resonance Imaging (MRI) is a way of getting internal pictures of various
parts of your body without the use of x-rays such as regular x-ray or CT scans.
An MRI scanner consists of a strong magnet which uses a radio wave coil to send signals
to the body and then receive similar signals back. These returning signals are converted
into pictures by a computer. Pictures of almost any part of your body can be
obtained at any angle necessary to evaluate the body part.
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000FAQ? |
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• What is MRA? |
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MRA stands for magnetic resonance angiography. It uses the same technology as MRI, but is used specifically to study blood vessels. The preparation and procedure for MRA is the same as for MRI. Sometimes a contrast material called gadolinium is injected intravenously to make the blood vessels show up more clearly.
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• What are the advantages of having an MRI scan? |
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MRI is the preferred diagnostic tool for the non-bony parts or soft tissues of the body. The brain, spinal cord and nerves are seen much more clearly with MRI than with standard x-rays or CT scans. MRI scans are often used to evaluate knees and shoulders after injury, as well as joints, muscles, ligaments and tendons. |
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• Is MRI safe? |
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MRI is quite safe for a majority of patients because your body is not exposed to radiation or any other harmful rays.
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• What if I have metal in my body? Can I still have an MRI? |
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Usually, yes. Most metal found in the body is surgically implanted and does not compromise the quality of the scan. The technologist will discuss any questions you may have prior to your diagnostic procedure. Due to the strength of the magnet, patients who have any of the items listed below should consult with our staff before scheduling a MRI exam.
Pacemaker · Neuro-stimulator (Tensunit) · Metal implants · Intrauterine device (IUD), etc. · Aneurysm clips Surgical staples · Implanted drug infusion device · Foreign metal objects in the eye
Shrapnel or bullet wounds · Permanent eyeliner · Pregnancy or breastfeeding
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• How long will my MRI take? |
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Scan times will vary, but most MRI scans will take 30 to 45 minutes. However, some scans require an intravenous contrast injection and can take up to one hour. |
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• Should I stop taking my medication before MRI? |
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It is important that you take any medication your doctor has prescribed. This is especially true for pain medication, as the quality of your MRI scan is dependent on how well you can remain motionless. |
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• Can I eat before my MRI scan? |
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There is no preparation needed for an MRI scan. You may eat and drink normally, but many people are more comfortable if they don't eat or drink for two (2) hours before the exam. |
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• When will I get my results? |
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Your results should be available in your physician's office within 24 hours. |
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• Do I have to take off my make-up before my scan? |
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Some make-up has metallic flecks that can cause interference with an MRI of the brain or head. If you arrive with make-up, the technologists will let you know if it needs to be removed. We provide an area for you to "freshen up" after your exam. |
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• What can I expect when I arrive for my MRI? |
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You will be greeted at the front desk and asked to complete some paperwork. You may download this paperwork from the patient resources section of this website. Once you have completed the paperwork, a technologist will show you to your personal dressing room. The MRI scanner may damage certain metal objects that patients frequently carry, such as a watch, credit cards, cell phones, glasses or jewelry. These items may be locked in your dressing room during your exam. |
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• What happens during the MRI? |
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The technologist will go over the questionnaire and answer any questions you may have about the MRI. Once prepared for your exam, the technologist will escort you into the MRI room. You will be asked to lie on your back, and given a knee cushion and blanket to make you more comfortable. You will be provided with earplugs or headphones so you can listen to your favorite CD or tape. You may choose from several styles of music. The technologist can both hear and see you throughout the entire exam.
The MRI makes a loud knocking or buzzing sound during each of several scans or "sequences". During this time, it is important to remain motionless, as this will impact the quality of the images. The technologist will talk to you throughout the exam and will tell you when it will begin and how long each sequence will last. Certain MRI scans may require the use of contrast media. This contrast is given by injection, to highlight certain areas of the body. When the scan is complete, you will be shown to your dressing room. Once you have collected your things, you are free to go. |
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• What is an MRI Arthrogram? |
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An arthrogram is a test that uses fluoroscopy to see inside a joint. Fluoroscopy is a study of moving body structures - similar to an x-ray "movie." A continuous x-ray beam is passed through the body part being examined, and is transmitted to a TV-like monitor so that the body part and its motion can be seen in detail. With an MRI arthrogram, the arthrogram portion of the exam is done first. In the X-ray suite, you will be given an injection filled with medication that will numb the area surrounding the joint. Then, a needle containing contrast will be inserted into the joint. Fluoroscopy will be used at this time to allow the radiologist to confirm that the needle is in proper position. Once the needle is visualized in the joint, the contrast will be administered. You will then be escorted to the MRI room for your exam. The contrast will highlight the ligaments and tendons, in and around your joint, allowing them to be seen on the MRI images. |
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