ArticleSurgical and radiologic anatomy : SRA2017
Pile driving into the skull and suspending the bridging veins? An undescribed role of arachnoid granulations.
Article in Surgical and radiologic anatomy : SRA, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Peripheral segment of the cerebral cortical vein: a magnetic resonance imaging study.Surgical and radiologic anatomy : SRA · 2025Article
- Magnetic resonance cisternography imaging findings related to the leakage of Gadolinium into the subarachnoid space.Japanese journal of radiology · 2021Article
- Cortical and bridging veins of the upper cerebral convexity: a magnetic resonance imaging study.Surgical and radiologic anatomy : SRA · 2021Article
- Cortical bridging venous segment protruding into the inner skull depression: a potential site of hemorrhage at external ventriculostomy.Surgical and radiologic anatomy : SRA · 2018Article
- Immobile cerebral veins in the context of positional brain shift: an undescribed risk factor for acute subdural hemorrhage.Surgical and radiologic anatomy : SRA · 2017Article
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Authors and funding
3 authors.
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Abstract
purposeArachnoid granulations (AGs) occasionally appear to protrude into the calvarial convexity, lying close to the bridging veins (BVs). This study aims to characterize such AGs and BVs using magnetic resonance imaging (MRI).
methodsNinety-five patients were enrolled in this study. Initially, stepwise frontal craniotomy was performed in an injected cadaver head. Next, examinations with contrast MRI were performed involving the whole cranial vault.
resultsIn cadaveric dissection, the AGs located in the parasagittal regions appeared as outward protrusions through the dura mater and in contact with the diploic veins. Forming tent-shaped sleeves, these AGs and the continuous arachnoid membranes suspended the BVs coursing just below. A total of 237 AGs were identified on contrast MRI that protruded into the skull, lying close to the BVs. Among them, 78 % were located in parasagittal regions as AG-BV pairs. These pairs were most frequently found in the middle third of the calvarial hemisphere, followed by the anterior and posterior thirds. In 34 %, the BV segments were lodged in the AGs.
conclusionsSome AGs located in the parasagittal regions and cerebral convexity pass through the dura mater and pile drive into the skull, which contribute to forming hanging-type arachnoid sleeves suspending the BVs. These structures may underpin the predisposition of BVs to injury following mechanical impacts.
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