Magnetic resonance imaging (MRI) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. MRI uses a powerful magnetic field, radiofrequency pulses, and a computer to produce detailed pictures of organs, soft tissues, bone, and virtually all other internal body structures. MRI does not use ionizing radiation (x-rays). Detailed MR images allow physicians to evaluate various parts of the body and determine the presence of certain diseases.
Depending on the type of MRI, some exams can take up to an hour to complete but the majority of exams usually take about 30 minutes.
No. MRI uses magnetic and radio waves, not radiation.
Yes, there are several devices and objects that cannot be brought near the scanner for your protection. Please tell you tech about any and all devices or metal objects that you have.
The loud noise during an MRI exam is due to the electromagnetic coil switching on to produce magnetic waves. The current is switched on and off rapidly, which creates the images; thus, also creating a continual loud banging noise amplified by the enclosed space.
A tech will be right outside the room watching your exam through a glass window. You will be able to communicate with your tech the entire duration of the exam.
All metallic objects are potentially harmful in a magnetic field. Check with your doctor and/or your MRI tech if you have any brain, ear or eye implants, or if you have any other metal in your body.
If you are pregnant, consult with your doctor before having an MRI performed.
If the MRI is routine, your doctor should have the results within 48 hours.