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What is MRI ?  

 

MRI Stands for Magnetic Resonance Imaging; MRI is a painless and safe diagnostic procedure that uses a powerful magnet and radio waves to produce detailed images of the body's organs and structures, without the use of X-rays or other radiation.  A MRI scanner consists of a large and very strong magnet in which the patient lies. A radio wave is used to send signals to the body and then receive signals back. These returning signals are converted into pictures by a computer attached to the scanner. Pictures of almost any part of your body can be obtained at almost any particular angle.
MRI scanners are good at looking at the non-bony parts or "soft tissues" of the body. In particular, the brain, spinal cord and nerves are seen much more clearly with MRI than with regular x-rays and CAT scans. Also, muscles, ligaments and tendons are seen quite well so that MRI scans are commonly used to look at knees and shoulders following injuries. A MRI scanner uses no x-rays or other radiation.


How safe is MRI?

MRI is quite safe in the majority of patients. Certain patients may not be able to have an MRI. These include people who get nervous in small spaces (claustrophobic) and those with implanted medical devices such as aneurysm clips in the brain, heart pacemakers and cochlear (inner ear) implants. Also, people with pieces of metal close to or in an important organ (such as the eye) may not be scanned. There are a few additional safety considerations and some exceptions based on individual circumstances.
What should I prepare for the exam?
Because the strong magnetic field used for MRI will pull on any ferromagnetic metal object implanted in the body, causing possible image distortion, tell the MRI staff if you:

  • Have a prosthetic hip, heart pacemaker (or artificial heart valve),implanted port, infusion catheter (brand names of Port-o-cath, Infusaport, or Lifeport), intrauterine device (IUD), or any metal plates, clips, pins, screws, or surgical staples in your body.
  • Have tattoos or permanent eyeliner.
  • Have a bullet or shrapnel in your body.
  • Have ever worked with metal.
  • Have tooth fillings or braces ? these items are usually not affected by the magnetic field, but they may distort pictures of the face or brain.
  • Have drug allergies.
  • Have had any surgeries.
  • May be pregnant.

In most cases, surgical staples, clips, plates, pins, and screws pose no risk during MRI if they have been in place for more than 4 to 6 weeks. If there is any question of metal fragments, an X-ray may be done to detect any metal objects.
Certain metal objects that we commonly have on our persons like watches, credit cards, hair pins, writing pens, etc. may be damaged by the MRI scanner or may be pulled away from our bodies if we go into an MRI room. Also, metal can sometimes cause poor pictures if it is close to the part being scanned. For these reasons, patients are asked to remove these objects before entering the MRI scanner. Remove any items that might affect MRI pictures, including hairpins, jewelry, glasses, hearing aids, and any removable dental work.


What will I experience during the MRI examination?

You will most likely be lying on a special table that moves into the center of the magnet. Prior to going into the magnet you will be offered earplugs to reduce the noise that you hear. You will then hear some "hammering" noises while the scanner is preparing to scan and taking the pictures. During this hammering noise, it is important not to move, as this would blur the pictures. You may also feel some vibration during the hammering noise and some slight movement of the table during the examination. Some patients will be given an injection in their arm of a substance that improves certain types of pictures. This substance, called a "contrast agent", is very safe and is unrelated to the iodine used for CAT scans and kidney x-rays. If a contrast injection is needed, you may feel discomfort at the injection site, and you may have a cool sensation at the site during the injection. Exams typically take between 30 minutes and one hour. Early models of MRI scanners required patients to be placed in confined positions; The images themselves are often available immediately after the scan and the patient is able to resume normal activity. 

When will I get the results?

A radiologist will review and interpret the MRI findings. The radiologist will not discuss the results with you, but will send a report to your primary care physician or referring doctor, who will give you the results. Usually the report will be ready within 2 ~ 3 days.

 

 

Naturo Medical Health Care P.C.

Welcome To Naturo Medical Health Care PC

Welcome To Naturo Medical Health Care PC