Magnetic resonance imaging (MRI) is a procedure that produces cross-sectional images of the body without the use of x-rays or radioactive materials. MRI uses a strong magnetic field, radio waves and a computer to produce excellent soft tissue images that are read by a radiologist. During the examination, you will lie on a table that places you inside a tunnel within the magnetic field. You must remain very still because any movement, such as coughing, will blur the images. You will hear a continuous knocking sound that is a normal noise during the scanning process caused by switching radio signals. Earplugs and/or earphones are provided for you to reduce this noise.
Most MRI exams do not require any preparation. Sometimes an injection of a contrast medium is given for the procedure. Due to the strong magnetic field, there are a number of precautions and contraindications for MRI. Before an examination is scheduled, our staff members will interview you by asking a series of screening questions. In addition, a member of the MRI staff will also have you complete a detailed questionnaire immediately prior to the scan. The need for this screening is very important to ensure your safety and must be done each and every time you may need this exam.