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The objective of our research was to create a three-dimensional (3D) representation of the vestibulo-cochlear system to precisely replicate the pathophysiological process of benign paroxysmal positional vertigo (BPPV), which occurs when canaliths are incorrectly positioned in the semicircular canals (SSCs). The model would be used for diagnostic postural assessments and therapeutic repositioning techniques in clinical environments. The secondary purpose of this model was to facilitate the education of doctors by enabling them to observe the movement of canaliths during repositioning procedures. CT scan data of a healthy right temporal bone was obtained from an anonymous patient. Based on the imaging data, a 3D model of a typical human vestibulo-cochlear labyrinth was segmented and hollowed using the 3D Slicer and Meshmixer software. Subsequently, the hollow model was fabricated via the photopolymerization 3D printing technology and infused with a lubricating fluid. This fluid contained little orange stones that had a resemblance to canaliths. The assessment of canalith movement encompassed various diagnostic examinations, such as the Dix-Hallpike, Supine Head Roll, and Supine Head-Hanging tests. In addition, therapeutic maneuvers, including the Epley, Barbecue/BBQ Roll, and Deep Head Hanging procedures, were executed. The video recording provided a comprehensive documentation of the operational mechanism of the manufactured product. A transparent 3D model allows for a clear demonstration of the vestibulo-cochlear labyrinth and the corresponding orientations of the semicircular canals (SSCs). Through the observation of the canalith’s movement in response to changes in head position with respect to gravity, we can acquire a comprehensive understanding of the occurrence of superior, posterior, and horizontal canalithiasis, as well as the effects of therapeutic repositioning techniques. This model offers a cost-effective means of visualizing the anatomy and pathophysiology of BPPV. Consequently, it can assist physicians in low- and middle-income countries (LMIC) in enhancing the efficiency of identifying and treating BPPV.

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Fabrication of a Low-Cost 3D Printed Vestibulo-Cochlear Model for Diagnosis and Treatment of Benign Paroxysmal Positional Vertigo

  • 会议论文

  • 发表日期：

    2025年

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  • Dat Minh Lu,
  • Tinh Quang Dang,
  • Van Phong Dong,
  • Hien Bui Thu Hoang,
  • Son Trung Huynh,
  • Dang Ngoc Tran,
  • Vy Thi Nhat Tran,
  • Khuong Nguyen An Luu,
  • An Le Pham

摘要

The objective of our research was to create a three-dimensional (3D) representation of the vestibulo-cochlear system to precisely replicate the pathophysiological process of benign paroxysmal positional vertigo (BPPV), which occurs when canaliths are incorrectly positioned in the semicircular canals (SSCs). The model would be used for diagnostic postural assessments and therapeutic repositioning techniques in clinical environments. The secondary purpose of this model was to facilitate the education of doctors by enabling them to observe the movement of canaliths during repositioning procedures. CT scan data of a healthy right temporal bone was obtained from an anonymous patient. Based on the imaging data, a 3D model of a typical human vestibulo-cochlear labyrinth was segmented and hollowed using the 3D Slicer and Meshmixer software. Subsequently, the hollow model was fabricated via the photopolymerization 3D printing technology and infused with a lubricating fluid. This fluid contained little orange stones that had a resemblance to canaliths. The assessment of canalith movement encompassed various diagnostic examinations, such as the Dix-Hallpike, Supine Head Roll, and Supine Head-Hanging tests. In addition, therapeutic maneuvers, including the Epley, Barbecue/BBQ Roll, and Deep Head Hanging procedures, were executed. The video recording provided a comprehensive documentation of the operational mechanism of the manufactured product. A transparent 3D model allows for a clear demonstration of the vestibulo-cochlear labyrinth and the corresponding orientations of the semicircular canals (SSCs). Through the observation of the canalith’s movement in response to changes in head position with respect to gravity, we can acquire a comprehensive understanding of the occurrence of superior, posterior, and horizontal canalithiasis, as well as the effects of therapeutic repositioning techniques. This model offers a cost-effective means of visualizing the anatomy and pathophysiology of BPPV. Consequently, it can assist physicians in low- and middle-income countries (LMIC) in enhancing the efficiency of identifying and treating BPPV.