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Evaluation on Effectiveness of a New System as well as Analysis on Optimal Horizontal Eye Position for Vertical Video Head Impulse Test

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Abstract

Objective

To compare the performances among three different systems for video head impulse test (vHIT), and to identify an optimal target angle for precisely evaluating the function of vertical semicircular canals in vHIT.

Methods

A two-center prospective study was done. Participants were sit 1.2 m away from the wall in a noise-proved room that dedicated for vHIT experiments. During the comparison experiments, similar settings were ensured in both hospitals, with the same distance to wall and angle of staring. For each equipment, the procedures followed the developers’ recommendations. The same examiner performed the comparison between two systems in one location. For the eye-position projects, targets were placed on the wall sequentially at the pre-marked lines for different angles. For the comparison projects, 9 and 13 participants were recruited, respectively. Any participant with otologic or vestibular disorders was excluded. A total of 26 healthy participants were recruited in the eye-position experiments, 16 of which were further involved in inter-examiner tests.

Results

Our evaluations of three different systems showed that a new vHIT system, VertiGoggles® ZT-VNG-I (VG) performed as good as the long-tested Otometrics® ICS impulse (Oto) and EyeSeeCam® (ESC). During the comparison, we validated 25-degree, instead of right ahead at 0 degree, is a better place to set the targets when torsion was applied at vertical semicircular canal planes.

Conclusion

The new VG system is good for clinical practices. Furthermore, we proposed a new protocol to set the targets 25 degrees from right ahead after tilting head 45 degrees to evaluate vertical canals during vHIT.

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. ENT Institute and Otorhinolaryngology Department of Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, 200031, China

    Tao Jiang, Jing Yu, Ruo-nan Huang & Wen-yan Li

  2. NHC Key Laboratory of Hearing Medicine (Fudan University), Shanghai, 200031, China

    Tao Jiang & Wen-yan Li

  3. Department of Neurology, Changzheng Hospital, Naval Medical University, Shanghai, 200003, China

    Fei Li, Rui Gao, Chen-yong Shang & Jian-hua Zhuang

Authors
  1. Tao Jiang
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  2. Fei Li
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  3. Jing Yu
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  4. Ruo-nan Huang
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  5. Rui Gao
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  6. Chen-yong Shang
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  7. Jian-hua Zhuang
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  8. Wen-yan Li
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Corresponding authors

Correspondence to Jian-hua Zhuang or Wen-yan Li.

Ethics declarations

The authors have no funding, financial and non-financial relationships, or conflicts of interest to disclose. This manuscript is approved by all authors for publication.

Additional information

This work was supported by grants from the National Science Foundation for Outstanding Young People (No. 81922018), the Transformation and Industrialization of Scientific and Technological Achievements in Shanghai (No. 18441904000), the National Natural Science Foundation of China (No. 81771011), the National Natural Science Foundation of China Young Investigator Program (No. 81800907), the Development Fund for Shanghai Talents (No. 2017046), and the Excellent Personnel Training Plan for the Shanghai Health System (No. 2017Q003).

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Jiang, T., Li, F., Yu, J. et al. Evaluation on Effectiveness of a New System as well as Analysis on Optimal Horizontal Eye Position for Vertical Video Head Impulse Test. CURR MED SCI 41, 705–711 (2021). https://doi.org/10.1007/s11596-021-2415-1

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  • DOI: https://doi.org/10.1007/s11596-021-2415-1

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