Cerebral and cerebellar MRI volumes in Williams syndrome
•We analyzed cerebral and cerebellar volumes in Williams syndrome (WS).•T1-weighted MRIs were acquired in individuals with WS and healthy controls.•WS showed relative cerebellar enlargement (despite overall cerebral reduction).•Distinct patterns of white matter to grey matter/cortex in the cerebrum...
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Published in | Research in developmental disabilities Vol. 35; no. 4; pp. 922 - 928 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier Ltd
01.04.2014
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | •We analyzed cerebral and cerebellar volumes in Williams syndrome (WS).•T1-weighted MRIs were acquired in individuals with WS and healthy controls.•WS showed relative cerebellar enlargement (despite overall cerebral reduction).•Distinct patterns of white matter to grey matter/cortex in the cerebrum and cerebellum.•Evidence of cerebellar alterations that may contribute to the WS profile.
Individuals with Williams syndrome (WS) present a set of cognitive, affective and motor symptoms that resemble those of patients with lesions to the cerebellum. Although there is some evidence for overall structural alterations in this brain region in WS, explorations on cerebellar white matter and cerebellar cortex volumes remain rather neglected. We aimed to compare absolute and relative cerebellar volumes, as well as patterns of white matter to cortex volumes in this brain region, between a group of individuals with WS and a group of healthy controls. T1-weighted magnetic resonance images were acquired in 17 individuals with WS and in 15 typically developing individuals. Our results showed that even though individuals from the clinical group had significantly smaller cerebrums (and cerebellums), cerebellar volumes relative to intracranial volumes were significantly enlarged. In addition, while gray matter was relatively spared and white matter disproportionately reduced in the cerebrum in WS, relative cerebellar cortex and white matter volumes were preserved. These findings support the hypothesis that volume alterations in the cerebellum are associated with the cognitive, affective and motor profiles in WS. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0891-4222 1873-3379 |
DOI: | 10.1016/j.ridd.2013.12.014 |