Department of Anatomy, Anhui Medical University, Hefei, China.
Neurosurgery. 2010 Sep;67(3 Suppl Operative):ons9-15; discussion ons15. doi: 10.1227/01.NEU.0000381683.27324.14.
Understanding of the intracranial venous anatomy is essential for preoperative planning.
To identify anatomic features of the dural entrance of the bridging veins (BVs) into the dural sinuses in the middle cranial fossa on the cadaver and to correlate such features with those of digital subtraction venogram, computed tomographic venogram, and magnetic resonance venogram.
A total of 30 adult cadavers and 86 patients were examined with anatomic dissection or neuroimages. The number, diameter, and location of the BVs entering the dural sinuses in the middle cranial fossa were recorded and compared between the cadavers and neuroimages. The dural entrances of the BVs were identifiable on neuroimages and distributed mainly at the anteromedial area of the fossa. Morphological features of the dural sinuses and meningeal veins in the fossa indicated that the techniques of lengthening the BV by dissecting it away from the dura mater or cutting a small area of the dura along the sides of the BV may not be applicable for the management of BVs in the anteromedial middle cranial fossa.
Unique anatomic features of the dural entrance of BVs entering the dural sinuses in the cadaver are correlated to those on neuroimages. Identification of the dural entrance of BVs with neuroimaging modalities provides a reliable measure for preoperative planning.
了解颅内静脉解剖结构对于术前规划至关重要。
在尸体上确定桥静脉（BVs）进入中颅窝硬脑膜窦的硬脑膜入口的解剖学特征，并将这些特征与数字减影静脉造影、计算机断层静脉造影和磁共振静脉造影的特征相关联。
共检查了 30 具成人尸体和 86 例患者的解剖或神经影像。记录了进入中颅窝硬脑膜窦的 BVs 的数量、直径和位置，并比较了尸体和神经影像之间的差异。BVs 的硬脑膜入口在神经影像上可识别，主要分布在颅窝的前内侧区域。颅窝中硬脑膜窦和脑膜静脉的形态特征表明，通过将 BVs 从硬脑膜上分离或沿着 BVs 的两侧切开一小部分硬脑膜来延长 BVs 的技术可能不适用于前内侧中颅窝 BVs 的处理。
尸体上 BVs 进入硬脑膜窦的硬脑膜入口的独特解剖学特征与神经影像上的特征相关联。神经影像学方法识别 BVs 的硬脑膜入口为术前规划提供了可靠的衡量标准。
