The gray scale value of ear tissues undergoing volume-rendering high-resolution cone-beam computed tomography

Komori, Masahiro; Miuchi, Shinya; Hyodo, Jun; Kobayashi, Taisuke; Hyodo, Masamitsu

doi:10.1016/j.anl.2018.01.012

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…Semi-automated segmentation was performed in a second step. We achieved the best results using a threshold segmentation algorithm with a voxel gray scale range of − 200 to +500 [15] as the desired inner ear contained voxels in this range. Anatomically, the vestibule with the horizontal, posterior, and upper SCC and the cochlea without modiolus and cochlear aqueduct were part of the volume measurements.…”

Section: Image Processingmentioning

confidence: 99%

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Hiller

Nour-Eldin

Gruber‐Rouh

et al. 2020

SN Compr. Clin. Med.

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The aim of the study was to obtain volumetric data of the components of the inner ear using three-dimensional reconstruction of high-resolution cone-beam computed tomography (CBCT) images. Two hundred three CBCT image series of the temporal bone from 118 anatomically normal patients (55 women and 63 men; mean age: 49.4 ± 20.4 years) with different suspected disorders were included in this study. Normative volumetric measurements of the inner ear, the cochlea, the semicircular canals (SSC), and the vestibule were determined using a semi-automated reconstruction method of the Workstation. Volumetric measurements were successfully completed in all 118 patients. Mean inner ear, cochlear, and vestibule volumes were statistically significantly larger in males than in females on both sides (p < 0.001). Regarding the semicircular canals, no statistically significant (p = 0.053) volume difference was found. The difference between the volumes on both sides was not significant. No correlation between the patient’s age and the volume of the compartments was seen (p > 0.05). There was no significant difference between mean bony inner ear volumes when the clinical diagnoses were compared (p > 0.05 for all clinical diagnoses and volumes). Our study concluded that three-dimensional reconstruction and assessment of the volumetric measurements of the inner ear can be obtained using high-resolution CBCT imaging.

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Section: Image Processingmentioning

confidence: 99%

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Hiller

Nour-Eldin

Gruber‐Rouh

et al. 2020

SN Compr. Clin. Med.

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“…Además, los valores de DEG se han utilizado para evaluar el sanado de lesiones periapicales posterior al tratamiento endodóntico, mostrando un aumento significativo de los valores de densidad en la zona periapical previo al tratamiento y 2 años post-operatorio (25). Por otro lado, en otorrinolaringología, se han investigado los valores de DEG de CBCT en los tejidos del oído, encontrando diferencias significativas en los valores para tejidos blandos, duros y espacios aéreos (26). A pesar de las prometedoras aplicaciones de los valores de DEG, es importante conocer que dichos valores pueden ser influenciados por varios factores técnicos.…”

Section: Posibles Aplicaciones De Los Valores De Deg En Tccbunclassified

“…Existen otras variables que pueden influenciar los valores de DEG, independientes del equipo. Un estudio reciente encontró diferencias significativas en los valores de DEG para tejidos del oído entre hombres y mujeres (26).…”

Section: Factores Técnicos Que Influyen En Los Valores De Degunclassified

Grayscale Values in Cone Beam Computed Tomography: Scope and Limitations

Ruiz-Imbert

Cascante-Sequeira

2020

Odovtos - Int J Dent Sc

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Cone-beam computed tomography (CBCT) is a 3D imaging technique widely used in maxillofacial diagnosis. The grayscale value (GSV) is a number that represents the amount of attenuation of the X-ray beam by the material contained in each voxel or structural unit of the tomographic volume. Similarly, in computed tomography (CT) used in medical radiology, the attenuation values are standardized in the Hounsfield Unit (HU) scale. Although GSV may have interesting potential applications in maxillofacial diagnosis, it is essential to know that HU differ from GSV. The latter are susceptible to multiple technical factors during the tomographic acquisition, so their value can vary among different CBCT scanners or when technical parameters are modified. Hence, GSV should not be extrapolated between different CBCT machines, and their use should be cautious while more investigation is available considering various equipment and acquisition protocols.

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Volume-rendered computed tomography images of the surgical field for endolymphatic sac surgery

Miuchi

Komori

Hyodo

et al. 2019

Eur Arch Otorhinolaryngol

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The gray scale value of ear tissues undergoing volume-rendering high-resolution cone-beam computed tomography

Cited by 4 publications

References 20 publications

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Grayscale Values in Cone Beam Computed Tomography: Scope and Limitations

Volume-rendered computed tomography images of the surgical field for endolymphatic sac surgery

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