成人CT血管成像静脉窦解剖研究及应用

目的　利用64排螺旋CT研究静脉窦影像解剖，为入颅手术设计提供解剖学资料。 方法 回顾重组105例64排螺旋CT头部CTA检查患者的静脉窦影像，测量上矢状窦、横窦、乙状窦大小以及观察其与颅骨的关系。 结果　上矢状窦走行于冠状缝下方。上矢状窦后段与人字点-枕骨隆突连线的对应关系以偏右型最多见，偏右型与右侧优势引流有关。窦汇中心左右偏移与SSS末端偏离一致。右侧TS、TSST、SS大于左侧。随着TSST、SS增大，静脉窦与颅骨或乳突表面、外耳道距离越小。 结论　头部CTA术前检查结合图像融合技术，可获得静脉窦解剖特征，以便指导开颅手术入路设计。

Anatomic study and application of the cerebra venous sinus in adult CT angiography

Objective The purpose of this study was to determine the anatomical features of venous sinus in clinic using subtraction computed tomography angiography (CTA) technique. Methods A total of 105 images of venous sinus were obtained by three-dimensional reconstruction after CT angiography of head, to determine the anatomical information of the venous sinus. Results The superior sagittal sinus is below the coronal suture. The posterior segment of the superior sagittal sinus is most prominent in the partial right compared with the line lambda to the occipital protuberance. The deviation of the center of the sinus confluence is consistent with the deviation of the posterior segment superior sagittal sinus. The right side of transverse sinus, transverse-sigmoid sinuses transition and sigmoid sinus are larger than the left. With the increase of transverse-sigmoid sinuses transition and sigmoid sinus, the distance between venous sinus and skull or mastoid surface and external auditory canal is smaller. Conclusions Subtraction CTA and merged images provide a feasible method to identify the anatomical relation between venous sinus and surface landmarks of cranium. Subtraction CT angiography is a reliable method in the anatomical features of the venous sinus for surgical craniotomies.