The variations of the sigmoid sinus included the enlargement of the sinus, the far-advanced sigmoid sinus and high jugular bulb.
乙状窦出现的变异包括乙状窦粗大、前置、高位颈静脉球。
Results the sigmoid sinus, internal auditory porus, jugular porus, cochlea, petrous ridge and the most posterior point of the posterior semicircular canal could be markers of surgery.
结果乙状窦沟、内听道孔、颈静脉孔、耳蜗、岩嵴和后半规管最后点等可作为手术标志。
Objective to study the body surface location of the transverse sinus and sigmoid sinus to provide the anatomic information to location of the bone window for petrous bone-associated operation.
目的确定横窦、乙状窦的体表定位，为岩骨相关手术的骨窗定位提供解剖学资料。
Objective to study the body surface location of the transverse sinus and sigmoid sinus to provide the anatomic information to location of the bone window for petrous bone-associated operation.
目的确定横窦、乙状窦的体表定位，为岩骨相关手术的骨窗定位提供解剖学资料。
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