MRI/MRA

Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body.MRI does not use radiation like traditional X-ray modalities. A sophisticated computer enhances images created by a magnetic field and radio frequency waves. The pictures then transformed into cross-sectional views of an organ or area studied. MRI is especially useful in diagnosing a variety of conditions and disorders affecting:

  • The central nervous system: the soft tissue parts of the brain and spinal cord
  • Orthopedic structures include internal bone architecture and joints, such as the knee, shoulder, jaw, wrist, and ankles. MRI is also the best imaging technique for cartilage, muscle, and ligaments.
  • Abdominal and pelvic organs involve the pancreas, liver, adrenal glands, and reproductive organs.
  • Blood vessels, arteries, and veins

ChristianaCare, Union Hospital utilizes a traditional MRI scanner.

Most people are comfortable with traditional MRI scanners. If you prefer an open MRI, ChristianaCare offers these services at our Smyrna, DE and Brandywine locations in Wilmington, DE. To schedule an Open MRI appointment at one of our Delaware locations, call toll-free 877-838-3088.

Preparing for your MRI scan

For most studies, there are no special preparations needed. Unless told otherwise, you may eat normally and should continue to take any regularly scheduled medications. Currently, the American College of Radiology (ACR) does not have any restrictions on scanning pregnant women. Please tell us if you are or think you might be pregnant.

You must also tell us if you have any metallic devices in your body. These objects may interfere with the magnetic field. Please let us know if you have any of the following:

  • Aneurysm clips
  • Any internal electronic device
  • Artificial heart valves or stents
  • Synthetic joints/metal rods
  • Cardiac pacemaker
  • Embedded shrapnel or metal fragments
  • Hearing aid or implants
  • ICD (Implantable cardioverter-defibrillators)
  • Medical-surgical clips or Intrauterine device
  • Neurostimulators
  • Shunts

You will have to remove all outer clothing and wear an exam gown. All loose metal objects must be left outside of the exam room. Such objects include cell phones, dentures, hairpins, jewelry, and watches. Credit cards also should not be brought into the exam room because the magnetic field will erase the credit card information.

The procedure

In some cases, the patient may receive an injection that will provide contrast in the images needed to enhance the detail of body parts.

You will lie on a table that positions you within the MRI unit, and a large open-ended tube will surround your body while the scanning commences. We will provide you with earplugs or headphones and a security ball. A certified and licensed MRI technologist will observe you from another room, speaking with you from an intercom system while operating the MRI computer.

You will hear some tapping noises as the computer generates the MRI images; during this time, you should lie motionless so that the pictures are as optimal as possible. If you feel uncomfortable, please notify the technologist by squeezing the security ball.