Cortical and bridging veins of the upper cerebral convexity: a magnetic resonance imaging study
| Autor: | Hideo Ono, Hisato Ishii, Satoshi Tsutsumi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Adolescent Dura mater Pathology and Forensic Medicine Young Adult 03 medical and health sciences Neuroimaging Cadaver medicine Humans Radiology Nuclear Medicine and imaging Aged Retrospective Studies Cerebral Cortex 0303 health sciences Cerebral Convexity medicine.diagnostic_test Cerebrum business.industry Dissection Meninges Magnetic resonance imaging Anatomy Middle Aged Cortical Vein Cerebral Veins Magnetic Resonance Imaging body regions medicine.anatomical_structure 030301 anatomy & morphology Female Surgery Dura Mater Superior Sagittal Sinus business Superior sagittal sinus |
| Zdroj: | Surgical and Radiologic Anatomy. 43:235-242 |
| ISSN: | 1279-8517 0930-1038 |
| DOI: | 10.1007/s00276-020-02579-4 |
| Popis: | There is no study exploring the cortical veins (CVs) and connecting bridging veins (BVs) with neuroimaging modalities. The present study aimed to characterize these veins of the upper cerebral convexity. A total of 89 patients with intact cerebral hemispheres and covering meninges underwent thin-sliced, contrast magnetic resonance imaging (MRI). In addition, three injected specimens were dissected in this study. In cadaver dissection, the BVs were observed to course in the arachnoid sheaths, suspended from the dura mater. The medial parts of the BVs, located near the superior sagittal sinus (SSS)-BV junction site, were occasionally exposed subdurally. The CVs were formed by venous channels arising from the cerebral gyri and those emerging from the sulci. On MRI, the CVs and connecting BVs were identified in the medial and latera convexity areas and medial surface of the cerebrum. These veins were highly variable in number, thickness, length, course, and distribution. In the medial convexity area, the CVs arising from the gyri were identified in 58% of patients, while they were found only in 11% of patients in the lateral convexity area. In the medial convexity area, involving the parasagittal region, the CVs connect more densely with the BVs that may predispose to injury during neurosurgical procedures. Mechanical impact exerted the area, diameter of the veins in the craniocaudal direction, and number of venous afferences may affect the SSS–BV junctional region in an indirect manner and lead to the development of acute subdural hematoma. |
| Databáze: | OpenAIRE |
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