摘要目的 研究Labbe静脉的解剖形态和位置,探讨通过3D-CT静脉造影(3D-CTV)的方法 来判断Labbe静脉的形态和位置,为术前决定是否适合应用颞底经小脑幕(经岩)手术入路提供帮助.方法 成人尸头标本10例(20侧)观察Labbe静脉形态,测量与横窦乙状窦岩上窦交界(STP)的距离.8例岩斜肿瘤患者术前通过3D-CTV测量Labbe静脉汇入静脉窦点与STP之间的距离,然后根据术中实际测量值来验证3D-CTV对Labbe静脉位置判断的准确性.结果 20侧Labbe静脉静脉窦汇入点和STP的距离为(22.91±8.09)mm,<10 mm(前置型)共2例,占10%.术前3D-CTV所显示的Labbe静脉形态与术中实际观察的形态完全一致,测量Labbe静脉汇入点至STP的距离和术中实际测量值基本一致.结论 相对于MRV和DSA,3D-CTV检查可以更方便准确地判断Labbe静脉位置.颞底经小脑幕(经岩)手术术前有必要进行3D-CTV检查以明确Labbe静脉的位置.

abstractsObjective The anatomical shape and location of the vein of Labbe were investigated and 3D-CT venography (3D-CTV) was used to identify and locate the vein of Labbe preoperation to protect the vein for temporal base transpetrosal transtentorial approach. Methods Ten cadaver heads for a total of 20 sides were examined. 8 patients with petroclival tumor received 3D-CTV examination to investigate and locating of the vein of Labbe before operation. The outcome of the 3D-CTV examination for the vein of Labbe was checked by the operation. Results The vein of Labbe can be divided into three different patterns. The distance between the terminations of the vein of Labbe and STP was (22.91±8.09) mm, with less than 10 mm in 10%. The shape of the vein of Labbe displayed by 3D-CTV was clear and same as the shape displayed in operation, and the distance between the terminations of the vein of Labbe and STP measured by 3D-CTV was also same with the value measured in the operation. Conclusions Comparing with MRV and DSA, 3D-CTV examination can locate the vein of Labbe more easily and exactly, and it should be performed and scrutinized carefully before planning the temporal base transpetrosal transtentorial approach.