What Is Magnetic Resonance Imaging (MRI)?
I. Definition Magnetic resonance imaging (MRI) also known as nuclear magnetic resonance imaging (NMRI), is a medical imaging technique used in radiology to provide detailed pictures of the organs and structures in the body. It is considered as a better medical technique than X ray imaging and useful for looking at the uterus and abdomen for tumors and abnormalities. II. Procedure No preparation is needed for an MRI, but you are asked to wear loose clothes without any metals fastening and no jewelry, because metals may interfere with performance of the medical instrument caused by too strong magnetic field in your body. As you lie comfortable on the table that moves into the tunnel-shaped magnet, you will hear loud knocking and staccato buzzing and clicking sound while the MRI is operated. The MRI images will be interpreted by a radiologist and copy of the images and interpretation will be send to your doctor. III. Risks In general MRI is considered safe for most people, but people with
MRI is an imaging method that produces pictures of the body using a magnet and radio waves. Using special antennas, the machine (called “MRI scanner”) receives radio waves from the body and processes the signals in its computer to generate very clear pictures of the anatomy. Why is it necessary? MRI is done to evaluate the structure and function of the heart and blood vessels. Your/your child’s cardiologist (heart doctor) has requested this test to find out information on the anatomy and function of the cardiac chambers and blood vessels. MRI may provide your/your child’s cardiologist with information that cannot be obtained by other tests such as an X-ray picture of the chest, ECG, echocardiogram (cardiac ultrasound) or other tests. Is MRI painful? No. MRI is considered a “non-invasive” test because the machine takes pictures without touching the body. There is no pain associated with an MRI examination. The MRI machine makes loud banging, buzzing and clicking noises during most of th
MRI, or magnetic resonance imaging, is a means of “seeing” inside of the body in order for doctors to find certain diseases or abnormal conditions. MRI does not rely on the type of radiation (i.e., ionizing radiation) used for an x-ray or computed tomography (CT) scan. The MRI examination requires specialized equipment that uses a powerful, constant magnetic field, rapidly changing local magnetic fields, radiofrequency energy, and dedicated equipment including a powerful computer to create very clear pictures of internal body structures. During the MRI examination, the patient is placed within the MR system or “scanner”. The powerful, constant magnetic field aligns a tiny fraction of subatomic particles called protons that are present in most of the body’s tissues. Radiofrequency energy is applied to cause these protons to produce signals that are picked up by a receiver within the scanner. The signals are specially characterized using the rapidly changing, local magnetic field and com
Magnetic resonance imaging (MRI) is a special test that produces very clear, detailed pictures of the organs and structures in your body. The test uses a powerful magnetic field, radio waves, and a computer to create images in cross-section. While an x-ray is very good at showing bones, an MRI lets your health care provider see structures made of soft tissue such as ligaments and cartilage and organs such as your eyes, brain, and heart.
