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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]
Medical condition Alzheimer's disease Other names Alzheimer's dementia Diagram of a normal brain compared to the brain of a person with Alzheimer's Pronunciation / ˈ æ l t s h aɪ m ər z ˈ ɑː l t s -/ Specialty Neurology Symptoms Memory loss, problems with language, disorientation, mood swings Complications Infections, falls and aspiration pneumonia in the terminal stage Usual onset Over ...
Before dementia develops (during the mild cognitive impairment phase), MRI scans show normal hippocampal volume. After dementia develops, MRI shows more atrophy among individuals with AD, and a slower reduction in volume over time among people with DLB than those with AD. [33] Compared to people with AD, FDG-PET brain scans in people with DLB ...
Cerebral atrophy is a common feature of many of the diseases that affect the brain. [1] Atrophy of any tissue means a decrement in the size of the cell, which can be due to progressive loss of cytoplasmic proteins. In brain tissue, atrophy describes a loss of neurons and the connections between them. Brain atrophy can be classified into two ...
A CT scan or MRI scan is commonly performed to possibly find either normal pressure hydrocephalus, a potentially reversible cause of dementia, or connected tumor. The scans can also yield information relevant to other types of dementia, such as infarction (stroke) that would point at a vascular type of dementia.
Binswanger's disease, also known as subcortical leukoencephalopathy and subcortical arteriosclerotic encephalopathy, [1] is a form of small-vessel vascular dementia caused by damage to the white brain matter. [2] White matter atrophy can be caused by many circumstances including chronic hypertension as well as old age. [3]
Collimator used to collimate gamma rays (red arrows) in a gamma camera. Single-photon emission computed tomography (SPECT, or less commonly, SPET) is a nuclear medicine tomographic imaging technique using gamma rays. [1] It is very similar to conventional nuclear medicine planar imaging using a gamma camera (that is, scintigraphy), [2] but is ...
Neuroimaging is the use of quantitative (computational) techniques to study the structure and function of the central nervous system, developed as an objective way of scientifically studying the healthy human brain in a non-invasive manner. Increasingly it is also being used for quantitative research studies of brain disease and psychiatric ...
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