Vocal Fold Augmentation with Beta Glucan Hydrogel Cross-Linked by γ Irradiation for Enhanced Duration of Effect: In Vivo Animal Study

Figure 6

Serial endoscopic findings after injection of the paralyzed vocal fold with irradiated hydrogel. From the left, immediately after injection, and at 1, 2, 4, 8, and 12 weeks after injection. The volume of the injected materials decreased slowly on endoscopy over time, while the vocal processes of the injected vocal folds (white arrowheads) were continuously rotated medially.