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Neuroimaging Determinants of Cognitive Performances in Stroke Associated With Small Vessel Disease
Author(s) -
Mok V.,
Chang Carlin,
Wong A.,
Lam W. W. M.,
Richards Polly S.,
Wong K. T.,
Wong Ka Sing
Publication year - 2005
Publication title -
journal of neuroimaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 64
eISSN - 1552-6569
pISSN - 1051-2284
DOI - 10.1111/j.1552-6569.2005.tb00297.x
Subject(s) - medicine , neuroimaging , stroke (engine) , cognition , disease , physical medicine and rehabilitation , neuroscience , psychiatry , mechanical engineering , engineering , biology
Background and Purpose . Controversies still exist as to the neuroimaging determinants of cognitive impairment in cerebral small vessel disease (SVD). The authors studied the neuroimaging correlates of cognitive performances among patients with stroke associated with SVD. Methods . The authors per formed cerebral computed tomography, magnetic resonance imaging, and diffusion‐weighted imaging among 74 consecu tive patients admitted to the acute stroke unit because of stroke associated with SVD. They examined the association between cognitive performances and the following neuroimaging features: volume of white matter changes (WMC), multiplicity of lacunae, location of lacunae, total cerebral atrophy, and frontal and medial temporal lobe atrophy. Results . Apart from age and education, univariate linear regression analyses revealed that WMC volume, presence of thalamic lacunae, cerebral atrophy, and left frontal lobe atrophy predicted performance on the Mini‐Mental State Examination while WMC volume, presence of thalamic infarcts, cerebral atrophy, and frontal lobe atrophy of both sides predicted performance on the Mattis Dementia Rat ing Scale‐Initiation/Preservation subscale. In the multivariate analyses, education ( R 2 = 0.22, P < .001), left frontal lobe atrophy ( R 2 = 0.10, P = .004), and presence of thalamic lacunae ( R 2 = 0.04, P = .049) were found to predict performance on the Mini‐Mental State Examination while age ( R 2 = 0.23, P < .001) and presence of thalamic lacunae ( R 2 = 0.08, P = .011) were found to predict performance on the Mattis Dementia Rating Scale‐Initiation/Preservation. Conclusions . Among patients with stroke associated with SVD, thalamic lacunae and frontal lobe atrophy are key determinants of cognitive performances.