They are arteriovenous shunts located in the dura that usually involve large dural venous sinuses.

位于硬膜的动静脉分流常常累及大的硬膜静脉窦。

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Arterial supply is usually through meningeal branches of the external carotid, internal carotid, and vertebral arteries. Drainage is via dural venous sinuses or other dural or leptomeningeal channels.

动脉血供一般是通过颈外动脉、颈内动脉及椎动脉的脑膜分支，分流是经由硬膜静脉窦或其他的硬膜或软脑膜血供。

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Conclusion MR is an effective technique for measuring the blood flow in transverse sinuses, which can reflect the venous drainage dominance from the point of "quantity" view.

结论MR是一种有效的横窦血液流量测定方法，可以从“量”的角度反映引流优势。

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