Threshold-based 3D CT visualization of high-attenuation structures in the endolymphatic sac: A technical feasibility study - 26/08/26
, Sayaka Tanioka aa, Kimitaka Kaga b, 1Graphical abstract |
Highlights |
• | A threshold-based three-dimensional CT (T-3DCT) workflow enables structured visualization of attenuation patterns within the endolymphatic sac and adjacent regions. |
• | Reproducible attenuation distributions suggest spatial heterogeneity potentially related to mineral composition. |
• | This approach provides a framework for in vivo assessment of tissue characteristics not appreciable on conventional CT. |
Abstract |
Objective |
To demonstrate the feasibility of threshold-based three-dimensional CT (T3D-CT) for visualizing attenuation patterns in the endolymphatic sac.
Methods |
High-resolution temporal bone CT datasets from healthy adults and patients with benign paroxysmal positional vertigo or Ménière’s disease were retrospectively analyzed using predefined attenuation thresholds (140–400 HU, >600 HU). Image evaluation was qualitative.
Results |
Reproducible attenuation patterns were visualized in vestibular structures. Regions corresponding to vestibular organs showed attenuation values of approximately 140–180 HU, whereas higher values were observed in osseous structures .
Conclusion |
T3D-CT enables attenuation-based visualization of vestibular structures. Findings are compatible with calcium-containing materials but are not specific.
Le texte complet de cet article est disponible en PDF.Keywords : Ménière disease, Benign paroxysmal positional vertigo, Tomography, X-Ray computed, Endolymphatic Sac, Otolith organs, Three-dimensional imaging, Image processing, Computer-assisted
Abbreviations : T3D, CT, HRCT, FOV, DFOV, HU, DLP, VR, BPPV, MD, CaCO 3 , CaP, CPA
Plan
Vol 53 - N° 5
Article 101587- septembre 2026 Retour au numéro
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