Latest MRI Technology for Brain Care
How MRI works
Magnetic resonance imaging (MRI) shows high-resolution images of tissue and blood flow
- High-power magnets align hydrogen molecules in the body
- Radio wave pulses are transmitted into the body to disturb this molecular alignment
- Images are created from new radio signals that are generated when hydrogen molecules return to alignment
- Magnetic field strength is measured in units called "Teslas"
How MRI has evolved over time
- Since the first human scan in 1977, MRI scanners have evolved in speed, convenience and power.
- 7 Tesla provides clearer images than earlier 1.5 or 3 Tesla MRI scanners.
- Most MRI scanners in the U.S. are 1.5 or 3 Tesla units. 7 Tesla is now the most powerful MRI strength available for patient use.
7 Tesla MRI: Higher resolution for greater diagnostic precision
The newest medically-approved MRI scanners are 7 Tesla, which before now were only used for research. As shown in the diagnostic images below, the 7 Tesla MRI offers resolution much higher than the more common 3 Tesla scanners. Greater resolution allows the person's care team to identify subtle abnormalities related to their condition. In some instances, this can improve treatment of the disease.
A higher resolution scan may offer new answers
People with a wide range of neurological issues may benefit from the 7 Tesla MRI. With the help of a doctor, the new scanners may provide new answers for:
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Epilepsy
Detect abnormalities that may be the source of seizures.
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Brain function
Assess functional areas of the brain to plan for complex surgery, including the removal of brain tumors.
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Brain aneurysms
More accurately detect very tiny aneurysms.
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Degenerative and demyelinating disorders
More clearly identify multiple sclerosis or amyloid angiopathy.
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Trauma and concussion
More accurately detect even the slightest brain bleeding from head injury.
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Brain vascular malformations
Detect and more accurately characterize abnormal blood vessels in the brain.
Source: MayoClinic.org