Abstract
Introduction
The Virchow-Robin spaces (V-R spaces) are well-known, but not systematically understood fluid-filled perivascular spaces that allow the convexity and basal perforating vessels to penetrate deep into the cerebral parenchyma.
Objective
This study aims to delineate anatomical characteristics of the normal V-R spaces by MR imaging with considerations on clinical and anatomofunctional implications of the V-R spaces.
Methods
In this prospective study with 3T magnetic resonance (MR) imaging, the whole extent of the intracranial V-R spaces was classified into basal, cortical, subcortical, paraventricular, and brainstem segments, on the basis of the topological difference in 105 control subjects. Morphological characteristics in each segment of the V-R spaces are described. For comparison with the neuroimaging appearance, V-R spaces were histologically examined in cadaveric human brains. The physiological functions of the V-R spaces and pathognomonic implications of unusually dilated, but asymptomatic, V-R spaces encountered in five subjects are discussed.
Results
The V-R spaces were found to form a complicated, while anatomically highly consistent, intraparenchymal canal network distributed over the whole cerebral hemispheres and connect the cerebral convexity, basal cistern, and ventricular system.
Conclusion
The V-R spaces may be essential for drainage routes of cerebral metabolites, additional buoyancy for the brain, and maintenance of homogenous intracranial pressure. MR imaging may be more advantageous in depicting the V-R spaces than histological examination.
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This work was not supported by any grants.
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The authors declare no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.
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Tsutsumi, S., Ito, M., Yasumoto, Y. et al. The Virchow-Robin spaces: delineation by magnetic resonance imaging with considerations on anatomofunctional implications. Childs Nerv Syst 27, 2057–2066 (2011). https://doi.org/10.1007/s00381-011-1574-y
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DOI: https://doi.org/10.1007/s00381-011-1574-y