Understanding MRI
MRI (Magnetic Resonance Imaging) utilizes a strong magnetic field and radio waves to produce pictures of the inside of the body. MRI generates images without the use of x-rays. An MRI scanner consists of a large, very strong magnet in which the patient lies. A radio wave antenna 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. There are two different types of MRI, “open” (Low Field) and “closed” (High Field).

Open (Low Field) MRI vs. Closed (High Field)
Open MRIs contain a large opening in the machine that allows larger patients (weighing over 300 pounds) and patients with severe claustrophobia to be scanned comfortably. However, the great majority of open MRIs produce images of less clarity; especially of smaller body parts. The reason for this is that the magnet in an Open MRI is often weaker than that of a “High Field”.

High Field MRIs use a magnet many times more powerful than an Open MRI, resulting in better pictures of smaller parts of the body and allowing smaller abnormalities to be discovered. Pictures of blood vessels or aneurysms can only be obtained through the practice high field MRI. These studies are referred to as an “MR Angiography” or an “MRA”. Another benefit of the High Field exam is the production of much faster scan times due in part to the more powerful magnet. Although the space inside the MRI is less than in the High Field, 98% of patients who are scanned on a high field MRI are comfortable during the procedure. New technology offers a “short bore” flared configuration that allows an environment that virtually eliminates patient anxiety. Midtown offers an advanced relaxation system in which the patient selects a stereo program or brings a CD to make their scan as comfortable as possible.

How is an MRI Performed?
When you first arrive at a Midtown Imaging Center, you will be greeted by see our reception staff where you will check in and fill out any necessary paperwork for your exam.

You will soon be greeted by introduced to a Midtown MRI Technologist. They will ask you a series of questions to make certain we are able to capture the best images possible during your examination. Items such as jewelry, watches, coins, keys, and credit cards are incompatible with the magnetic resonance imaging equipment. We ask that you either leave these items at home or be prepared to leave them in a private locker provided in our changing rooms. Patients with pacemakers, aneurysm clips, or metal fragments in the eyes cannot be scanned. These objects can be attracted by the magnet in the MRI and distort your images. Also, certain articles of clothing such as metal zippers, rivets, wires, and belt buckles, are incompatible with the MRI procedure for similar reasons.

When your procedure begins, a Midtown MRI Technologist will assist you prior to, as well as communicate with you throughout the procedure. During the imaging session a series of repetitive knocking sounds are heard. We provide you with a noise suppression sound system that will block-out much of the noise generated. Your exam will likely last between 5 and 60 minutes. You will be asked to lie still for periods of 3 to 10 minutes at a time while the series of images are collected. You can breathe freely during this time.

Preparation
There is no specific preparation for an MRI. However, we ask you bring all previous films, such as X-rays, Cuts, or MRI’s of the area to be examined. Midtown will return these films to your referring doctor.

Results of Your Test
A Midtown Board Certified Radiologist specializing in MRI interpretation will report the results of this test to the referring physician by telephone, fax, or mail, who will then review.