Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-11-21
pubmed:abstractText
Identifying pre-clinical Alzheimer's disease (AD) in subjects with mild cognitive impairment (MCI) is a major issue in clinical diagnosis. Establishing a combination of predictive markers from different fields of research might help in increasing the diagnostic accuracy. Aim of this study was to evaluate the potential role of 99mTc-ECD single photon emission computed tomography (SPECT) and memory scores in predicting conversion to AD in MCI subjects. Thirty-one MCI subjects underwent a clinical and neuropsychological examination, and a regional cerebral blood flow (rCBF) SPECT scan at baseline. Subjects had been followed periodically through 2 years in order to monitor the progression of cognitive symptoms. Canonical variate analysis of principal components was able to separate all subjects who converted to AD from those who remained stable, the former being characterized by a specific hypometabolic pattern, involving the parietal and temporal lobes, precuneus, and posterior cingulate cortex. Canonical correlation analysis of combined baseline memory deficits and rCBF SPECT images identified pre-clinical AD with a sensitivity and specificity of 77.8%. The pattern of hypoperfusion 99mTc-ECD SPECT and the severity of memory deficits predict the risk of progression to probable AD dementia in MCI subjects.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0197-4580
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
24-31
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:16298237-Alzheimer Disease, pubmed-meshheading:16298237-Cognition Disorders, pubmed-meshheading:16298237-Cysteine, pubmed-meshheading:16298237-Humans, pubmed-meshheading:16298237-Image Interpretation, Computer-Assisted, pubmed-meshheading:16298237-Longitudinal Studies, pubmed-meshheading:16298237-Male, pubmed-meshheading:16298237-Middle Aged, pubmed-meshheading:16298237-Neuropsychological Tests, pubmed-meshheading:16298237-Organotechnetium Compounds, pubmed-meshheading:16298237-Prognosis, pubmed-meshheading:16298237-Radiopharmaceuticals, pubmed-meshheading:16298237-Reproducibility of Results, pubmed-meshheading:16298237-Risk Assessment, pubmed-meshheading:16298237-Risk Factors, pubmed-meshheading:16298237-Sensitivity and Specificity, pubmed-meshheading:16298237-Severity of Illness Index, pubmed-meshheading:16298237-Tomography, Emission-Computed, Single-Photon
pubmed:year
2006
pubmed:articleTitle
Combined 99mTc-ECD SPECT and neuropsychological studies in MCI for the assessment of conversion to AD.
pubmed:affiliation
Department of Neurological Sciences, Neurologic Clinic, University of Brescia, P.za Spedali Civili 1, 25100 Brescia, Italy. bborroni@inwind.it
pubmed:publicationType
Journal Article, Controlled Clinical Trial, Research Support, Non-U.S. Gov't