Three-Dimensional Reconstruction of the Semicircular Canals with a Two-Hands Model

Yilmazer, Rasim; Topçuoğlu, Osman Melih

doi:10.5152/tao.2019.4412

Cited by 4 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yılmazer and Topçuoğlu ( 10 ) showed the anatomy of the SSCs with a two-handed model and stated that it would be effective for understanding the diseases of the SSCs.…”

Section: Discussionmentioning

confidence: 99%

3D Model to Understand the Diagnosis and Treatment of Horizontal Canal BPPV

Günerı¹,

Hancı²,

Olgun³

et al. 2022

TAO

View full text Add to dashboard Cite

Objective: Our primary objective was to develop a three-dimensional (3D) model of the vestibular labyrinth to understand the pathophysiological mechanisms of benign paroxysmal positional vertigo (BPPV) observed during common diagnostic positional tests. We secondarily aimed to monitor the effects of the repositioning maneuvers and use this tool in teaching. Methods: A 3D model of a human semicircular canals (SSCs) system was created by 3D printing the core and assembling it with silicone tubing filled with lubricant oil containing colored small stones in the lumen mimicking otoconia. We used the model in horizontal canal BPPV diagnostic tests and therapeutic maneuvers. The working mechanism of the model we designed was recorded with video. Results: The model allowed for a clear display of the anatomy and the respective orientations of the SSCs. Otolith movement in the horizontal canals could be imitated during diagnostic positional tests (Dix-Hallpike and Pagnini-McClure) and therapeutic maneuvers (Epley, Semont, Lempert and Gufoni). Conclusion: As well as helping to understand the anatomy and physiology of the SSCs, this simple 3D model also provides a teaching tool for the diagnosis and treatment of BPPV. The mechanism of horizontal canal canalithiasis and the effect of therapeutic repositioning maneuvers could be clearly observed by watching the markers in the lumen demonstrating the progress of otolith movements with changes in head position relative to gravity.

show abstract

“…Yılmazer and Topçuoğlu ( 10 ) showed the anatomy of the SSCs with a two-handed model and stated that it would be effective for understanding the diseases of the SSCs.…”

Section: Discussionmentioning

confidence: 99%

3D Model to Understand the Diagnosis and Treatment of Horizontal Canal BPPV

Günerı¹,

Hancı²,

Olgun³

et al. 2022

TAO

View full text Add to dashboard Cite

show abstract

“…The prerequisite for measuring the spatial orientation of the semicircular canal is to establish a spatial coordinate system. Commonly used three-dimensional spatial coordinate systems include the Frankfurt coordinate system 11 and Reid's coordinate system 3 , which is determined by bony points including the superior or midpoint of the auricle and the infra-orbital margin point. The study of the spatial posture of the semicircular canal has been limited by the lack of scan coverage that did not include the bony points, or by the difficulty of identifying the bony points on MRI scans, making it difficult to establish a spatial coordinate system.…”

Section: Discussionmentioning

confidence: 99%

“…The author explains that the reason why the head space coordinate system was not established is that it is difficult to determine the landmark positions needed for establishing the coordinate system, and the scanning range is insufficient, resulting in the omission of the landmark position. The commonly used three-dimensional coordinate systems include Frankfurt coordinate system 4,11 and Reid's coordinate system 3 . Frankfort horizontal is the plane passing through bilateral porions and the left orbitale.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it is necessary to establish a spatial coordinate system to measure the spatial direction of the semicircular canal, which makes it rare to study the spatial attitude of the semicircular canal. In addition, the reported data are often inconsistent 1,2,3,4 , often lack of reliable spatial coordinate system, and are limited to the study of semicircular canal morphology and the relative position relationship between the semicircular canal 5,6,7,8,9,10,11 . With the development of modern medical imaging and computer technology, the planar fitting and spatial posture measurement of semicircular canals based on 3D reconstruction technology have become the research focus of semicircular canal anatomy and morphology.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mathematical Model of Human Semicircular Canal Spatial Attitude 

Lin

Zheng

et al. 2021

Preprint

View full text Add to dashboard Cite

Located deep in the temporal bone, the semicircular canal is a subtle structure that requires a spatial coordinate system for measurement and observation. In this study,Fifty-five semicircular canal and eyeball models were obtained by segmentation of MRI data. The spatial coordinate system was established by taking the top of the common crus and the bottom of eyeball as the horizontal plane. Firstly, the plane equation is calculated according to the centerline of the semicircular canals. Then, according to the parameters of the plane equation, the plane normal vectors are obtained. Finally, the average unit normal vector of each semicircular canal plane can be obtained by calculating the average value of the vectors. It is more intuitive and accurate to calculate the average normal vector of semicircular canal plane with the vector average method, which is different from the angular average method in different degrees. The mathematical model of semicircular canal spatial attitude established in this study is more reliable, which can guide the vestibular function examination, and also help guide the diagnosis and treatment of BPPV.

show abstract

“…Moreover, it is necessary to establish a spatial coordinate system to measure the spatial direction of the semicircular canal, which means few studies have done this. In addition, the reported data are often inconsistent (1-4), often lack a reliable spatial coordinate system and are limited to studies of the semicircular canal morphology and the relative positional relationships of the semicircular canal (5)(6)(7)(8)(9)(10)(11). In the past, the study of semicircular canal anatomy usually used cadavers, which were limited in regards to anatomical morphology, and the spatial posture of the semicircular canal was not fully studied.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Human Semicircular Canal Spatial Attitude

Lin

Zheng

et al. 2021

Front. Neurol.

View full text Add to dashboard Cite

Located deep in the temporal bone, the semicircular canal is a subtle structure that requires a spatial coordinate system for measurement and observation. In this study, 55 semicircular canal and eyeball models were obtained by segmentation of MRI data. The spatial coordinate system was established by taking the top of the common crus and the bottom of the eyeball as the horizontal plane. First, the plane equation was established according to the centerline of the semicircular canals. Then, according to the parameters of the plane equation, the plane normal vectors were obtained. Finally, the average unit normal vector of each semicircular canal plane was obtained by calculating the average value of the vectors. The standard normal vectors of the and left posterior semicircular canal, superior semicircular canal and lateral semicircular canal were [−0.651, 0.702, 0.287], [0.749, 0.577, 0.324], [−0.017, −0.299, 0.954], [0.660, 0.702, 0.266], [−0.739, 0.588, 0.329], [0.025, −0.279, 0.960]. The different angles for the different ways of calculating the standard normal vectors of the right and left posterior semicircular canal, superior semicircular canal and lateral semicircular canal were 0.011, 0.028, 0.008, 0.011, 0.024, and 0.006 degrees. The technology for measuring the semicircular canal spatial attitudes in this study are reliable, and the measurement results can guide vestibular function examinations and help with guiding the diagnosis and treatment of BPPV.

show abstract

Three-Dimensional Reconstruction of the Semicircular Canals with a Two-Hands Model

Cited by 4 publications

References 13 publications

3D Model to Understand the Diagnosis and Treatment of Horizontal Canal BPPV

3D Model to Understand the Diagnosis and Treatment of Horizontal Canal BPPV

Mathematical Model of Human Semicircular Canal Spatial Attitude

Measurement of Human Semicircular Canal Spatial Attitude

Contact Info

Product

Resources

About

Three-Dimensional Reconstruction of the Semicircular Canals with a Two-Hands Model

Cited by 4 publications

References 13 publications

3D Model to Understand the Diagnosis and Treatment of Horizontal Canal BPPV

3D Model to Understand the Diagnosis and Treatment of Horizontal Canal BPPV

Mathematical Model of Human Semicircular Canal Spatial Attitude&nbsp;

Measurement of Human Semicircular Canal Spatial Attitude

Contact Info

Product

Resources

About

Mathematical Model of Human Semicircular Canal Spatial Attitude