Magnetic resonance imaging of the brain uses a magnetic field, radio waves and a pc to create a detailed image of the complex structure of brain tissues. For a Brain MRI, the head is scanned with the aid of an MRI machine. A Brain MRI gives a clear and detailed cross-sectional image of the brain area giving a 3-dimensional representation of the brain. These cross sectional better can be projected and stored in a pc or printed on a film. Since Brain MRIs produce better soft tissue images than X ray reports and may distinguish between the gray matter and the white matter of the brain, they help in locating defects in the brain tissues like, tumors, pituitary masses, radiation harm to the brain, brain swelling, abnormalities of flow of blood, optic glioma and brain aneurysm more accurately and precisely.
MRIs are a safer option for brain scanning
MRI has been able to identify lesions in the brain in about 95% of patients as to when compared to the CT scan that identified lesions in about 25% of the patients. An MRI technique called diffusion\/perfusion is used for scanning the brain and helps to detect a brain stroke within minutes of onset, allowing for earlier treatment. Unlike x rays, that are harmful to the brain, MRIs are a safer option for brain scanning because of no significant adverse effects. Gradient magnets are utilized to alter the magnetic field in the area which has to be scanned whilst the magnetic force is being applied.
The exact area of the patient’s brain
Brain MRI helps the technician to focus on the exact area of the patient’s brain they would like to scan. A brand new study has evolved where Brain MRIs are now being widely used for polygraph tests as well as to identify if an individual is lying. It does it by tracking the blood flow into certain regions of the brain, indicating increased activity of lying. MRI.