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Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing ...
Functional magnetic resonance imaging or functional MRI (fMRI) measures brain activity by detecting changes associated with blood flow. [1][2] This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases. [3]
Signs and symptoms. Frontotemporal dementia is an early onset disorder that mostly occurs between the ages of 45 and 65, [13] but can begin earlier, and in 20–25% of cases onset is later. [11][14] Men and women appear to be equally affected. [15] It is the most common early presenting dementia. [16]
While eye scans can’t yet diagnose Alzheimer’s disease, Dr. Simon Law, MD, an ophthalmologist at UCLA Health, says these studies are helping doctors better understand the connection between ...
Alzheimer's disease (AD) is a neurodegenerative disease that usually starts slowly and progressively worsens, [ 2 ] and is the cause of 60–70% of cases of dementia. [ 2 ][ 15 ] The most common early symptom is difficulty in remembering recent events. [ 1 ] As the disease advances, symptoms can include problems with language, disorientation ...
The results may help experts detect Alzheimer’s sooner, allowing earlier treatment. ... published in Neurology found that cognitively healthy people who self-reported memory problems had early ...
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