An MRI is a safe painless test. It uses radio waves and magnetic field to take pictures of soft tissues, organs and bones.
The pictures provide information that can help your doctor diagnose the problem that you are having.
Arrive on time for your test. Report at appointed time.
If picture are being taken of your abdomen liver or pancreas, do not eat or drink for 4 hours before the test.
A channel refers to the receiver pathway of the MRI system. There are 4 channel systems and 8 channel systems.
If you upgrade an MRI from 4 to an 8 channel this will provide for 8 signal paths and shorten acquisition time.
The piece that makes the pictures. That's because during your MRI a radiofrequency is transmitted into your body.
The coil acts as an antenna to receive the radio frequency signal coming outof your body and transmit that data to a computer which the ngenerates images.
The magnet field produced by the magne- et in a 1.5T MRI machine is 15,000 gauss, meaning the magnet in a 1.5 T scanner is 30,000 times strong- er than that produced by the Earth.
The scanner uses this str- ength to align the hydr- ogen nuclei and produ- ce the images for a MRI exam.
Remove any items that can be affected by the magnet. These may include hairpins, jewellery, coins, dentures, keys or credit cards. Please leave valuable belongings at home.
You will be asked to change into a centre’s gown.
You may have an IV (Intravenous) put in your arm to give you contrast medicine during the test.
If being in a small space scares you, talk to your doctor before the test. Your doctor may recommend some medicine to help you relax.
You can eat, drink and take your medicines before the test.
You will lie on a table in the middle of a long tube like machine.
The table slides into the opening of the machine until the part of your body to be checked is in the center Lie very still during the test.
You may be asked to hold your breath for few seconds during the test. The machine may make a noise while pictures are taken. Yu may be given ear plugs to wear.
You can talk to the staff through a speaker. Tell the staff if you need help or are uncomfortable.
You may drive home after the test if you were not given medicine to help you relax during the test.
If you were not given medicine to help you relax, an adult must be with you to take you home. It is not safe for you to drive or leave alone.
If you were given contrast medicine during the test, drink 6 to 8 (8 ounce) glasses of liquid to flush the contrast out of your body.
Good liquids to drink are water, milk and juice. Limit the amount of caffeine you drink such as coffee, tea and soft drinks.
The results can be collected from the centre or if you wish the results can be sent to your doctor. Your doctor will share the results with you.
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