Detectability of minute temporal bone structures with ultra-high resolution CT

Computed tomography (CT) is the imaging tool of choice in the diagnosis of temporal bone lesions. With the recent progress in imaging technology, CT with higher spatial resolution (Ultra-high resolution CT) has become available in the clinical setting. The purpose of this study is to evaluate the vi...

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Bibliographic Details
Published inAuris, nasus, larynx Vol. 46; no. 6; pp. 830 - 835
Main Authors Hiraumi, Harukazu, Obara, Makiko, Yoshioka, Kunihiro, Ehara, Shigeru, Sato, Hiroaki
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.12.2019
Subjects
Chorda tympani
Chorda Tympani Nerve - diagnostic imaging
Computed tomography
Cone-Beam Computed Tomography
Ear Ossicles - diagnostic imaging
Ear, Inner - diagnostic imaging
Ear, Middle - diagnostic imaging
Geniculate Ganglion - diagnostic imaging
Healthy Volunteers
Humans
Imaging
Multidetector Computed Tomography
Ossicle
Stapedius - diagnostic imaging
Temporal Bone - diagnostic imaging
Tendons - diagnostic imaging
Tomography, X-Ray Computed - methods
Chorda tympani
Computed tomography
Ossicle
Imaging
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Summary:Computed tomography (CT) is the imaging tool of choice in the diagnosis of temporal bone lesions. With the recent progress in imaging technology, CT with higher spatial resolution (Ultra-high resolution CT) has become available in the clinical setting. The purpose of this study is to evaluate the visibility of small temporal bone structures using ultra-high resolution CT. The visibility of 27 minute temporal bone structures on ultra-high resolution CT images was evaluated. Non-helical axial scans were performed in 18 normal hearing ears without previous otologic diseases. Visibility was scored by an experienced radiologist and otologist. Minute temporal bone structures including the ossicular chain, the crus of the stapes, the greater superficial petrosal nerve, and the anterior malleolar ligament were clearly visualized on ultra-high resolution CT. The stapedius muscle tendon and the chorda tympani exiting the posterior canaliculus and coursing medial to the malleus could be visualized. Ultra-high resolution CT provides good visualization of small temporal bone structures in normal subjects.
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ISSN:0385-8146
1879-1476
1879-1476
DOI:10.1016/j.anl.2019.03.007