What an MRI Is
MRI is short for Magnetic Resonance Imaging. MRI is a very useful type of diagnostic
imaging exam and can be used for a variety of reasons. The sensitivity of MRI to changes
in soft tissue, as well as its very high resolution, allow for the visualization of changes
that may not be seen in other imaging exams. MRI excels at imaging soft tissues such as
internal organs, muscles, cartilage and the brain and spinal cord. It is also very sensitive
to subtle changes in bones. While MRI is a very powerful and versatile technology, it is not
used in all circumstances. Your doctor will let you know if MRI is the right exam for you.
MRI does not use ionizing radiation, as CT scans and x-rays do. Instead, MRI
generates images using a very strong magnet and radio waves. The images are cross
sections like CT scans, but MRI can also produce images in
lengthwise planes without the patient having to change position.
Some MRI scans require the use of a contrast medium, also referred to as gadolinium.
Gadolinium, which is given intravenously, highlights certain body parts so the
radiologist can better see any abnormalities.
Not everyone may have an MRI. Due to the strong magnet used, some implanted
materials and devices are not safe to image. Before you undergo an MRI, you will
be asked to complete a questionnaire to ensure that it is safe for you to have an MRI.
Conventional MRI machines have a donut shape with a tube that is usually about
3 feet in length. This exam causes anxiety for some people who are claustrophobic.
If you know you are claustrophobic, please let our staff know at the time of scheduling.
In some cases, you may be able to have your exam on our open MRI machine. However,
some MRI exams can not be done on the open MRI scanner. In these cases, a mild
sedative may be used to help you relax.
Invision Sally Jobe offers MRI exams at several of our outpatient centers in the South Denver
Metro area of Colorado. We offer open MRI at our Highlands Ranch location.