Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Department of Otolaryngology-Head and Neck Surgery, College of Medicine, , Uijeongbu St. Mary's Hospital , The Catholic University of Korea, #65-1 Geumo-Dong, Uijeongbu City, Gyeonggi-Do, 11765, Republic of Korea.
Surg Radiol Anat. 2024 Nov;46(11):1789-1794. doi: 10.1007/s00276-024-03464-0. Epub 2024 Aug 29.
This study investigated the internal carotid artery (ICA) and jugular bulb (JB) structures in terms of lateral temporal bone resection using 3D computed tomography (CT).
We retrospectively investigated 80 ears of 40 patients using 3D reconstruction data from normal temporal bone CT. Ten critical points (P) in the temporal bone were marked in the 3D object with reference to the axial, coronal, and sagittal images of the CT scans. An imaginary plane of the facial nerve (PLf) course was also reconstructed in relation to the three points of the chorda-facial junction, P5 (second genu), and P3 (cochleariform) process.
The distances (mean ± SD; mm) from points P3 to P1 (the highest level of the JB) and P2 (the posterior wall of the ascending petrous IAC at the level of the Eustachian tube) were 12.03 ± 2.56 and 9.79 ± 1.78, respectively. The distances from point P4 (chorda-facial junction) to P1 and P2 were 10.98 ± 2.70 and 17.66 ± 2.26, respectively. The angles (mean ± SD; degree) between the PLf to the line from Pa (point of the anterior bony canal) to P3 and P4 were 17.80 ± 10.05º and 8.93 ± 5.37º, respectively. The angles between the PLf to the line from P3 to P1 and P2 were - 36.35 ± 13.28º and - 24.78 ± 13.91º, respectively. The angles between the PLf to the line from P4 to P1 and P2 respectively were - 40.35 ± 15.37º and - 13.34 ± 7.63º.
Understanding the anatomical relationships of P1 and P2 at P3 and P4 can be helpful in preventing iatrogenic trauma of the ICA and JB.
本研究通过使用三维计算机断层扫描（CT）对颞骨外侧进行骨切除，探讨颈内动脉（ICA）和颈静脉球（JB）的结构。
我们回顾性地研究了 40 名患者的 80 耳，这些患者来自正常颞骨 CT 的三维重建数据。在 3D 对象中，以 CT 扫描的轴位、冠状位和矢状位图像为参照，标记了 10 个颞骨关键点（P）。面神经（PLf）平面也参照三叉神经和面神经交接点的 3 个点（P5（第二膝状神经节）和 P3（耳蜗形））进行重建。
P3 点到 P1（JB 最高点）和 P2（咽鼓管水平的上升岩骨内颈内动脉后壁）的距离（均值±标准差；mm）分别为 12.03±2.56 和 9.79±1.78。P4（三叉神经和面神经交接点）点到 P1 和 P2 的距离分别为 10.98±2.70 和 17.66±2.26。PLf 与从 Pa（前骨管）到 P3 和 P4 的线之间的角度（均值±标准差；度）分别为 17.80±10.05°和 8.93±5.37°。PLf 与从 P3 到 P1 和 P2 的线之间的角度分别为-36.35±13.28°和-24.78±13.91°。PLf 与从 P4 到 P1 和 P2 的线之间的角度分别为-40.35±15.37°和-13.34±7.63°。
了解 P3 和 P4 处 P1 和 P2 的解剖关系有助于预防颈内动脉和颈静脉球的医源性损伤。
