| Magnetic resonance imaging (MRI) of the brain | | | | lesions in about 25% of the patients. An MRI |
| uses a magnetic field, radio waves and a | | | | technique called diffusion/perfusion is used |
| computer to create a detailed image of the | | | | for scanning the brain and helps to detect a |
| complex structure of brain tissues. For a | | | | brain stroke within minutes of onset, |
| Brain MRI, the head is scanned with the help | | | | allowing for earlier treatment.Unlike x-rays, |
| of an MRI machine. A Brain MRI gives a clear | | | | which are harmful to the brain, MRIs are a |
| and detailed cross sectional image of the | | | | safer option for brain scanning because of no |
| brain area giving a three-dimensional | | | | significant side effects. Gradient magnets |
| depiction of the brain. These cross sectional | | | | are used to alter the magnetic field in the |
| images can be projected and stored in a | | | | area that has to be scanned while the |
| computer or printed on a film. Since Brain | | | | magnetic force is being applied. Brain MRI |
| MRIs produce better soft tissue images than | | | | helps the technician to concentrate on the |
| X-ray reports and can distinguish between the | | | | exact area of the patient's brain they want |
| grey matter and the white matter of the | | | | to scan.A new study has evolved where Brain |
| brain, they help in locating defects in the | | | | MRIs are now being widely used for polygraph |
| brain tissues like, tumors, pituitary masses, | | | | tests as well as to identify if a person is |
| radiation damage to the brain, brain | | | | lying. It does so by tracking the flow of |
| swelling, abnormalities of blood flow, optic | | | | blood into certain areas of the brain, |
| glioma and brain aneurysm more accurately and | | | | indicating increased activity of lying.MRI |
| precisely. MRI has been able to identify | | | | provides detailed information on MRIs, Open |
| lesions in brain in about 95% of patients as | | | | MRIs, Brain MRIs, MRI Scans and more. MRI is |
| compared to the CT scan that identified | | | | affiliated with Digital Oscilloscopes. |