Usefulness of positron emission tomography to detect cerebral amyloid as a means to diagnose neurodegenerative disease.

We present a case of suspected Alzheimer's disease and discuss the association in this patient between cerebral amyloid angiopathy and Alzheimer's disease, as well as the benefits of a unique nuclear imaging modality, amyloid positron emission tomography, in diagnosing dementia. PMID: 28670089 [PubMed - in process]
Source: Baylor University Medical Center Proceedings - Category: Universities & Medical Training Authors: Tags: Proc (Bayl Univ Med Cent) Source Type: research

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BACKGROUND AND PURPOSE: Cell loss within the nucleus basalis of Meynert is an early event in Alzheimer disease. The thickness of the nucleus basalis of Meynert (NBM) can be measured on structural MR imaging. We investigated NBM thickness in relation to cognitive state and biochemical markers. MATERIALS AND METHODS: Mean bilateral nucleus basalis of Meynert thickness was measured on coronal T1-weighted MR imaging scans from the Alzheimer’s Disease Neuroimaging Initiative dataset. Three hundred and fifteen scans (80 controls, 79 cases of early mild cognitive impairment, 77 cases of late mild cognitive impairment and 7...
Source: American Journal of Neuroradiology - Category: Radiology Authors: Tags: ADULT BRAIN Source Type: research
ConclusionsThis study provides information about Aβ plaque burden, tau tangle burden, and neurodegeneration in cognitively unimpaired persons at three levels of genetic risk for AD. Unimpaired APOE ϵ4 HMs can be studied before their 70s to evaluate the understanding of factors, processes, and interventions involved in the predisposition to and prevention of AD, and after their 70s, to discover factors, processes, and interventions involved in the resilience or resistance to and prevention of AD.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
Can you distinguish the taste of a red wine versus a rosé? How about the look of a 1960s muscle car versus a foreign import? Do you prefer to grow lilies or tulips? Would you rather listen to Dark Side of the Moon or “Fly Me to the Moon”? To answer any of these questions, you need to use your semantic memory. Your semantic memory is your store of factual knowledge of the world and the meaning of words. It’s how you know that a fork is for eating (not twirling your hair) and what color a lion is. It’s both the source of your vocabulary and how you know what something does even if you don&rsquo...
Source: Harvard Health Blog - Category: Consumer Health News Authors: Tags: Alzheimer's Disease Brain and cognitive health Healthy Aging Memory Source Type: blogs
CONCLUSION: The low agreement between amyloid PET/CT and previous clinical and instrumental assessments that we found in our study suggests that the amyloid PET/CT provides additional and early information. To perform an early and differential diagnosis of AD could have a great impact on the patient's management and cost of care in order to perform the correct therapeutic interventions and to allow family members to manage adequately the patient's demanding care. PMID: 31802055 [PubMed - in process]
Source: Hellenic Journal of Nuclear Medicine - Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research
In this study, we compared three different approaches for the quantification of hippocampal [18F]flortaucipir signal using a semi-automated technique, and assessed correlations with cognitive performance across methods.Methods: Dynamic 130 minute [18F]flortaucipir PET scans were performed in 109 subjects (45 cognitively normal subjects (CN) and 64 mild cognitive impairment/Alzheimer's disease (AD) dementia patients. We extracted hippocampal binding potential (BPND) using receptor parametric mapping with cerebellar grey matter as reference region. PVC HDH was performed. Based on our previous study in which we manually erode...
Source: NeuroImage: Clinical - Category: Radiology Source Type: research
This report describes the practical benefits and challenges of using integrated FDG-PET-MRI to support the clinical diagnosis of various dementias. Over the past 7 years, we have performed integrated FDG-PET-MRI on>1500 patients with possible cognitive impairment or dementia. The FDG-PET and MRI protocols are the same as current conventions, but are obtained simultaneously over 25 minutes. An additional Dixon MRI sequence with superimposed bone atlas is used to calculate PET attenuation correction. A single radiologist interprets all imaging data and generates 1 report. The most common positive finding is concordant tem...
Source: Topics in Magnetic Resonance Imaging - Category: Radiology Tags: Review Articles Source Type: research
To the Editor In their Viewpoint on preclinical Alzheimer disease (AD), Langa and Burke cite data from the Imaging Dementia —Evidence for Amyloid Scanning (IDEAS) study to support the claim that positive results on amyloid positron emission tomography (PET) scans may lead to inappropriate use of AD medications in cognitively unimpaired individuals. Following published appropriate use criteria for amyloid PET, patients enrolled in the IDEAS study were required to meet clinical criteria for mild cognitive impairment (MCI) or dementia, and individuals with unimpaired cognition were excluded from the study. Physician cho...
Source: JAMA Internal Medicine - Category: Internal Medicine Source Type: research
DiscussionElevated FTP-PET reflects Braak IV or greater neuropathology. Participants with primary age-related tauopathy and hippocampal sclerosis did not show elevated FTP-PET signal. Secondary neuropathologic diagnoses of Alzheimer's disease neuropathologic change can lead to borderline elevated FTP-PET signal.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
What exactly is psychosis? What happens in the brain of a person with schizophrenia who is hallucinating? Schizophrenic Rachel Star Withers shares her personal hallucinations and delusions and Dr. Joseph Goldberg, who specializes in researching what goes on in the brain when someone is experiencing psychosis, joins to break down how the brain functions during psychotic episodes. Host Rachel Star Withers, a diagnosed schizophrenic, and co-host Gabe Howard delve into these intense subjects in this episode of Inside Schizophrenia.  Highlights from “Psychosis in Schizophrenia” Episode [02:13]  Rachel, do...
Source: World of Psychology - Category: Psychiatry & Psychology Authors: Tags: Brain and Behavior Disorders General Inside Schizophrenia Mental Health and Wellness Active psychosis Delusions Delusions Hallucinations Living with Schizoprenia Mental Disorder Mental Illness Psychology psychotic Psychotic Break Source Type: blogs
DEMENTIA, in particular Alzheimer ’s disease, effects 850,000 people in the UK. This figure is set to rise to two million by 2015. There is currently no cure for dementia, however, a new study has suggested Alzheimer’s disease could be predicted by a brain scan decades before symptoms develop.
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
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