Diffusion tensor tractography to depict the course of facial nerve displaced by large vestibular schwannomas.
Taoka T, Sakamoto M, Nakagawa H, Iwasaki S, Fukusumi A, Hirohashi S, Kichikawa K, Hirabayashi H, Sakaki T
Nara Medical University
In this study, using diffusion tensor tractography, we could extract the course of facial nerve displaced by large vestibular schwannoma, and the course agreed with surgical findings in most of the cases. On a surgery of vestibular schwannoma, identification of the facial nerve displaced by the tumor is very importanct to avoid facial nerve injury. However, it is difficult to depict the course of the facial nerve using conventional MR technique. Diffusion tensor tractography is considered to be a powerful tool for predicting the course of displaced facial nerve in vestibular schwannoma preoperatively.