Subjective evaluation of the structures in the IAC and membranous labyrinth
| Anatomic Structure | No. of Patients | |
|---|---|---|
| 3D CISS | 3D FRFSE | |
| IAC | ||
| Facial nerve | 8/8 | 8/8 |
| Cochlear nerve | 8/8 | 8/8 |
| Superior vestibular nerve | 8/8 | 8/8 |
| Inferior vestibular nerve | 8/8 | 8/8 |
| Cochlea | ||
| 2.5 turns | 8/8 | 8/8 |
| Modiolus | 8/8 | 8/8 |
| Spiral lamina | 8/8 | 8/8 |
| Semicircular canals | ||
| Superior | 8/8 | 4/8 |
| Posterior | 8/8 | 7/8 |
| Horizontal | 8/8 | 7/8 |
| Endolymphatic duct | 3/8 | 2/8 |
| Facial nerve canal | 6/8 | 4/8 |
Note.—Structures were defined as adequately visualized or absent. Note loss of fluid signal intensity in the SCC on one-half of the FRFSE images. Visualized endolymphatic ducts were all normal in caliber.