What is an MRI?

Magnetic Resonance Imaging (MRI) does not use x-rays or radiation. Instead, a combination of common radio waves and a magnetic field are used to obtain the images.

During the examination, a large magnet in the MRI unit aligns the nuclei of hydrogen atoms in the body in one direction. Radio waves transmitted into the MRI unit change the alignment of the hydrogen atoms at a rapid rate. These changes are measured and fed into the MRI computer system where thousands of mathematical calculations are made.

The results are displayed as images on a computer screen. MRI, in effect, draws a map of the hydrogen atoms in your body. These images can help your physician diagnose your condition and plan your treatment.

Procedure

If necessary, the patient will be asked to change into a gown. Patients are informed to remove all jewelry, metal objects and credit cards as not to interfere with the large magnet used during the examination.

The technologist assists the patient and lies them down on a comfortable, padded table. Patients are positioned in the appropriate position and reminded to remain as still as possible during the examination. The table will electronically move the patient through the scanner. During the study, a rapid drumming noise can be heard and may cause some vibration. A friend or relative may be in the room during the examination if necessary.

After The Exam

The radiologist will review the examination before a patient leaves to ensure the adequate images have been captured. He will then interpret the images and send a written report to their doctor.


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