Morphologic measurements of 3D Eustachian tube model and their diagnostic value regarding Eustachian tube dysfunction – A cross-sectional observational study
| Autor: | Savvas Kourtidis, Georg Bier, Serena Preyer, Johann-Martin Hempel |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Tympanic Membrane
Eustachian tube Lumen (anatomy) Computed tomography 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Temporal bone otorhinolaryngologic diseases medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies Ear Diseases Imaging Feature medicine.diagnostic_test business.industry Eustachian Tube Mean value General Medicine Anatomy Eustachian tube dysfunction Cross-Sectional Studies medicine.anatomical_structure 030220 oncology & carcinogenesis Clinical diagnosis business |
| Zdroj: | European Journal of Radiology. 136:109563 |
| ISSN: | 0720-048X |
| Popis: | Purpose To investigate the diagnostic value of three-dimensional morphologic measurements of the Eustachian tube on computed tomography in Eustachian tube dysfunction. Method This prospective cross-sectional observational study includes forty patients with unilateral Eustachian tube dysfunction. The clinical diagnosis is verified using the Eustachian tube score – 7 and the Eustachian tube dysfunction questionnaire – 7. Computed tomography scans of the temporal bone are acquired while performing a Valsalva manoeuvre to improve the visualization of the air-filled Eustachian tube lumen. The Eustachian tubes are delineated on curved planar reconstructions, and three-dimensional models are constructed. Seven morphological parameters are measured for each Eustachian tube: the cross-sectional size of the tympanic and pharyngeal orifice; the visualization length; the inclination angles, and the curvature angles. Morphological measurements and Eustachian tube scores are correlated. Results The mean value of the visualization length of the complete Eustachian tube and in its bony segment is significantly higher in healthy sides than in pathological sides (p = 0.034 and p = 0.029, respectively). There is a significant correlation between the Eustachian tube score - 7 and the cross-sectional size of the tympanic orifice (rP = 0.361; p = 0.022). The Eustachian tube score - 7 correlates significantly with the visualization length of complete Eustachian tube (rP = 0.436; p = 0.005) and its bony segment (rS = 0.598; p Conclusions The cross-sectional size of the tympanic orifice may be a specific imaging feature indicating the obstructive Eustachian tube. However, 3D morphologic measurements of the Eustachian tube are insufficient to yield useful data about its function. |
| Databáze: | OpenAIRE |
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