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MRI Scan Center - Grand Island, NE

WebMD Physician Directory

Grand Island, Nebraska

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MRI (Magnetic Resonance Imaging Scan)

What is an MRI scan?

An MRI (or magnetic resonance imaging) scan is a radiology technique that uses magnetism, radio waves, and a computer to produce images of body structures. The MRI scanner is a tube surrounded by a giant circular magnet. The patient is placed on a moveable bed that is inserted into the magnet. The magnet creates a strong magnetic field that aligns the protons of hydrogen atoms, which are then exposed to a beam of radio waves. This spins the various protons of the body, and they produce a faint signal that is detected by the receiver portion of the MRI scanner. The receiver information is processed by a computer, and an image is produced.

The image and resolution produced by MRI is quite detailed and can detect tiny changes of structures within the body. For some procedures, contrast agents, such as gadolinium, are used to increase the accuracy of the images.

When are MRI scans used?

An MRI scan can be used as an extremely accurate method of disease detection throughout the body. In the head, trauma to the brain can be seen as bleeding or swelling. Other abnormalities often found include brain aneurysms, stroke, tumors of the brain, as well as tumors or inflammation of the spine.

Neurosurgeons use an MRI scan not only in defining brain anatomy but in evaluating the integrity of the spinal cord after trauma. It is also used when considering problems associated with the vertebrae or intervertebral discs of the spine. An MRI scan can evaluate the structure of the heart and aorta, where it can detect aneurysms or tears.

It provides valuable information on glands and organs within the abdomen, and accurate information about the structure of the joints, soft tissues, and bones of the body. Often, surgery can be deferred or more accurately directed after knowing the results of an MRI scan.

What are the risks of an MRI scan?/...

Recommended Reading Related to MRI (Magnetic Resonance Imaging Scan)

Stroke »

What is a stroke?

Brain cell function requires a constant delivery of oxygen and glucose from the bloodstream. A stroke, or cerebrovascular accident (CVA), occurs when blood supply to part of the brain is disrupted, causing brain cells to die. Blood flow can be compromised by a variety of mechanisms.

Blockage of an artery

  • Narrowing of the small arteries within the brain can cause a lacunar stroke, (lacune means "empty space"). Blockage of a single arteriole can affect a tiny area of brain causing that tissue to die (infarct).
  • Hardening of the arteries (atherosclerosis) leading to the brain. There are four major blood vessels that supply the brain with blood. The anterior circulation of the brain that controls most motor  activity, sensation, thought, speech, and emotion is supplied by the carotid arteries. The posterior circulation, which supplies the brainstem and the cer...

Emergency Contact for Grand Island

  • In case of Emergency, call 911

Nearby Grand Island Hospitals *

St Francis Medical Center
2620 W Faidley Ave
Grand Island, NE 68803
(308)384-4600

VA Medical Center Grand Island
2201 N Broadwell Ave
Grand Island, NE 68803
(308)382-3660

Memorial Hospital
1423 7th St
Aurora, NE 68818
(402)694-3171

Howard County Community Hospital
1113 Sherman St
Saint Paul, NE 68873
(308)754-4421

Mary Lanning Memorial Hospital
715 N St Joseph Ave
Hastings, NE 68901
(402)463-4521

Hastings Regional Center
4200 W 2nd St
Hastings, NE 68901
(402)462-1971

Litzenberg Memorial County Hospital
1715 26th St
Central City, NE 68826
(308)946-3015

Henderson Health Care Services
1621 Front St
Henderson, NE 68371
(402)723-4512

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