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Updated: Feb 6, 2026

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
Published on: March 14, 2017
Diagnostic utility of flexible fiberoptic nasopharyngolaryngoscopy recorded onto a smartphone: A pilot study
Jason A Brant1, Kevin Leahy1, Natasha Mirza1
1Hospitals of the University of Pennsylvania, Philadelphia, PA, USA.
Objectives:
To evaluate the diagnostic accuracy of flexible fiberoptic examinations of the larynx recorded onto smartphones.
Methods:
Prospective, blinded study of inpatients requiring laryngoscopy. A live exam was performed, then a smartphone was attached to the endoscope using a novel coupling device and the same examination was recorded. The live and recorded exams were evaluated by two laryngologists, each blinded to the findings of the other.
Results:
Eighteen subjects were evaluated. Evaluation of airway patency was identical (Kappa = 1.0 [1, 1]). Evaluation of vocal cord motion was identical for 14 subjects: 9 normal, 3 paretic, 2 paralytic (Kappa = 0.69 [0.38, 1]).
Conclusion:
There is high correlation between laryngeal diagnoses using live flexible fiberoptic laryngoscopy and recordings using a coupling device to transfer the recordings on to smartphones. Critical findings such as airway patency and vocal fold motion showed the highest correlation.
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