(A710) Comparison of Three-Dimensional and Conventional Laryngostroboscopy in Diagnosing Functional Dysphonia

Introduction: Comparison of Three-Dimensional and Conventional Laryngostroboscopy in Diagnosing Functional Dysphonia
Diagnosing functional dysphonia (FD) can be challenging, especially with the limitations of traditional laryngostroboscopy, which may not always capture vocal issues

Methods: It is a randomized prospective study which primary objective is to evaluate the diagnostic accuracy of three-dimensional laryngostroboscopy compared to conventional laryngostroboscopy in detecting functional dysphonia.
The inclusion criteria are: Adults aged 18-65; Presenting with symptoms of hoarseness or vocal strain for at least 4 weeks; Clinically diagnosed with functional dysphonia by an ENT Doctor.
The exclusion criteria: Presence of organic voice disorders; Prior vocal surgery; Any contraindications to laryngostroboscopic evaluation.
All participants will be assessed by an 2 ent doctor- Laringology. Then, each participant will undergo both the conventional and 3D laryngostroboscopic examination with at least 1 days between each examination.Two independent ENT doctors will review the images and assign a diagnosis based on the visual information. For each participant, VHI or SVHI will be applied.
Data will be analyzed using Mcnemar and concordance tests will be used to assess the closeness between the diagnostic methods. A p-value of < 0.05 will be considered statistically significant. Population study will also be presented

Results: We similar results between both methods, with a slightly better accuracy found for three-dimensional laryngoscopy

Conclusions: While conveying a clearer and overall better image, both methods demonstrated comparable levels diagnostic accuracy for functional dysphonia. Further studies should investigate this relationship for other specific vocal pathologies, and for different levels of doctor training.