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MRI Scan Center - Gilroy, CA

WebMD Physician Directory

Gilroy, California

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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 Gilroy

  • In case of Emergency, call 911

Nearby Gilroy Hospitals *

Saint Louise Regional Hospital
9400 No Name Uno
Gilroy, CA 95020
(408)848-2000

Watsonville Community Hospital
75 Nielson St
Watsonville, CA 95076
(831)724-4741

Hazel Hawkins Memorial Hospital
911 Sunset Dr
Hollister, CA 95023
(831)637-5711

Kaiser Permanente San Jose Medical Center
250 Hospital Pkwy
San Jose, CA 95119
(408)972-7000

Natividad Medical Center
1441 Constitution Blvd
Salinas, CA 93906
(831)755-4111

Sutter Maternity & Surgery Center
2900 Chanticleer Ave
Santa Cruz, CA 95065
(831)477-2200

Dominican Hospital
1555 Soquel Dr
Santa Cruz, CA 95065
(831)462-7700

Salinas Valley Memorial Healthcare System
450 E Romie Ln
Salinas, CA 93901
(831)757-4333

Good Samaritan Hospital Mission Oaks
15891 Los Gatos Almaden Rd
Los Gatos, CA 95032
(408)356-4111

Good Samaritan Hospital San Jose
2425 Samaritan Dr
San Jose, CA 95124
(408)559-2011

El Camino Hospital of Los Gatos
815 Pollard Rd
Los Gatos, CA 95032
(408)378-6131

Regional Medical Center of San Jose
225 N Jackson Ave
San Jose, CA 95116
(408)259-5000

Santa Clara Valley Medical Center
751 S Bascom Ave
San Jose, CA 95128
(408)885-5000

O'Connor Hospital
2105 Forest Ave
San Jose, CA 95128
(408)947-2500

Kaiser Permanente Santa Clara Medical Center
700 Lawrence Expy
Santa Clara, CA 95051
(408)851-1000

Community Hospital of the Monterey Peninsula
23625 Holman Hwy
Monterey, CA 93940
(831)624-5311

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