Figure 5.

Imaging of 3D reconstruction. A1. 3D reconstruction showed that the SPV was located above the trigeminal nerve. A2. The relationship between the vein and trigeminal nerve in three-dimensional reconstruction was consistent with that in operation. B1. 3D reconstruction showed that the trigeminal nerve was compressed by TPv. B2. The intraoperative findings were consistent with the results of 3D reconstruction. C1. 3D reconstruction results showed that TPv interfered with the operation field. C2. Intraoperative findings. D1. 3D reconstruction showed that SPV was located above the trigeminal nerve and did not interfere with the operation site. D2. There is no need to disturb SPV during operation. E1. 3D reconstruction results showed that v.CPF interfered with the operation field. E2. During the operation, the v.CPF should be shifted to show the responsible vessels. 3D reconstruction, three-dimensional reconstruction; SPV, superior petrosal vein; CPF, erebellopontine fissure; TPv, transverse pontine vein.