Volumetric evaluation of temporal bone structures in the cases with bilateral tinnitus: clinical and morphometrical study

Göçmen-Mas, Nüket; Kahveci, Orhan Kemal; Fahrioğlu, Sevda Lafcı; Okur, Nazan; Canan, Sinan; Yonguç, Nilüfer; Özel, Özkan; Karabekir, Selim

doi:10.5603/fm.a2017.0057

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Dillon [5], on cadaveric models, and Cros [7], from 10 or more scans, were interested in the mastoid only; but the mastoid is not the preferred working area for endoscopic surgery, and can be enlarged on request by drilling. Pacholke [8] found an average middle ear volume of 0.58 cm 3 from 15 scans, with a maximum axial dimension of 1.57 cm, while Mas [9] evaluated it at between 5.25 and 6.22 cm 3 from 18 scans.…”

Section: Workpace Characterizationmentioning

confidence: 99%

A New RCM Mechanism for an Ear and Facial Surgical Application

Michel

Salunkhe

Chablat

et al. 2020

Mechanisms and Machine Science

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Since the insertion area in the middle ear or in the sinus cavity is very narrow, the mobility of the endoscope is reduced to a rotation around a virtual point and a translation for the insertion of the camera. This article first presents the anatomy of these regions obtained from 3D scanning and then a mechanism based on the architecture of the agile eye coupled to a double parallelogram to create an RCM. This mechanism coupled with a positioning mechanism is used to handle an endoscope. This tool is used in parallel to the surgeon to allow him to have better rendering of the medium ear than the use of Binocular scope. The mechanism offers a wide working space without singularity whose borders are fixed by joint limits. This feature allows ergonomic positioning of the patient's head on the bed as well as for the surgeon and allows other applications such as sinus surgery.

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Section: Workpace Characterizationmentioning

confidence: 99%

A New RCM Mechanism for an Ear and Facial Surgical Application

Michel

Salunkhe

Chablat

et al. 2020

Mechanisms and Machine Science

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Stereologic Investigation of Mastoid Air Cell Geometry: Volume, Surface Area, and Anisotropy

Søndergaard

Nyengaard

Bloch

2020

Otology &Amp; Neurotology

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Objective: To assess mastoid geometry using computed tomography (CT) scans and design-based stereological methods. Background: The anatomical organization of the mastoid air cell system (MACS) remains debated. Geometrical parameters have previously been determined by automated image-analysis algorithms. Stereology is an alternative approach, which has previously been applied to estimate the volume of the MACS, but has not previously been used to estimate surface area or study anisotropy. Methods: Twenty-three clinical CT scans of aerated temporal bones obtained from various ENT patients were studied. The structural orientation and anisotropy of the MACS was investigated by test-grid rotation and rose plots. Volume, surface area, and surface area-to-volume ratio were estimated with design-based stereology. Results: Anisotropy of the mastoid air cells was demonstrated by a significant difference in surface area estimates between the axial and coronal planes (p = 0.0065). Rose plots illustrated variances in surface area estimates with different grid rotations, and a minimum value in the craniocaudal direction was shown. Sampling in the axial plane provided the least variance due to anisotropy. The mean (±SD) volume and surface area estimates were 5.71 ± 2.98 cm3 and 117 cm2 ± 60 cm2, respectively. A large biological variation was noted. The mean (±SD) surface-to-volume ratio was 20.6 ± 2.8 cm−1. Conclusions: The stereological technique proved to be a robust method for volume and surface area estimation in clinical CT scans. The mastoid air cells constitute an anisotropic cell-system that seems to have a predominant orientation in the craniocaudal direction.

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Geometric Atlas of the Middle Ear and Paranasal Sinuses for Robotic Applications

et al. 2021

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In otolaryngologic surgery, more and more robots are being studied to meet the clinical needs of operating rooms. However, to help design and optimize these robots, the workspace must be precisely defined taking into account patient variability. The aim of this work is to define a geometric atlas of the middle ear and paranasal sinuses for endoscopic robotic applications. Scans of several patients of different ages and sexes were used to determine the average size of these workspaces, which are linked by the similar use of endoscopes in surgery.

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Volumetric evaluation of temporal bone structures in the cases with bilateral tinnitus: clinical and morphometrical study

Abstract: The data on the hearing findings and morphometrical evaluation of the cases with bilateral tinnitus may be important for anatomists and clinicians. (Folia Morphol 2018; 77, 1: 57-64).

Cited by 3 publications

References 24 publications

A New RCM Mechanism for an Ear and Facial Surgical Application

A New RCM Mechanism for an Ear and Facial Surgical Application

Stereologic Investigation of Mastoid Air Cell Geometry: Volume, Surface Area, and Anisotropy

Geometric Atlas of the Middle Ear and Paranasal Sinuses for Robotic Applications

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