Computed tomography findings in large vestibular aqueduct syndrome

Ma, Xiaoxue; Yang, Ying; Xia, Ming; Li, Dumin; Xu, Anting

doi:10.1080/00016480802412813

Cited by 17 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…reported a case of SSCD in a young child at the age of 12 years and suggested that SSCD is a developmental defect. The co-existence of SSCD and EVA further supported this developmental hypothesis ( Ma et al., 2009 , Zhou et al., 2007 ). The present study revealed that the average width of vestibular aqueduct is 0.4 at midpoint and 0.5 at opercular site, which is far below the value for EVA ( Boston et al., 2007 ).…”

Section: Discussionsupporting

confidence: 63%

Clinically relevant human temporal bone measurements using novel high-resolution cone-beam CT

et al. 2017

View full text Add to dashboard Cite

ObjectiveTo test the feasibility of measuring fine temporal bone structures using a newly established cone-beam computed tomography (CBCT) system.Materials and methodsSix formalin-fixed human cadaver temporal bones were imaged using a high-resolution CBCT system that has 900 frames and copper + aluminum filtration. Fine temporal bone structures, including those of the facial nerve canal and vestibular structures, were identified and measured.ResultsThe fine structures of the middle ear, including the tympanic membrane, tendon of the tensor tympani, cochleariform process of the semicanal of the tensor tympani, pyramidal eminence, footplate of the stapes, full path of the facial nerve within the temporal bone, supralabyrinthine space, semicircular canals, pathway of the subarcuate canal, and full path of the vestibular aqueduct, were clearly demonstrated. The vestibular aqueduct has a midpoint width of 0.4 ± 0.0 mm and opercular width of 0.5 ± 0.1 mm (mean ± SD). The length of the internal acoustic meatus was 10.6 ± 1.2 mm (mean ± SD), and the diameter of the internal acoustic meatus was 3.7 ± 0.3 mm (mean ± SD).ConclusionThis novel high-resolution CBCT system has potentially broad applications in the diagnosis of inner ear disease and in monitoring associated pathological changes, surgical planning, navigation for the ear surgery, and temporal bone training.

show abstract

Section: Discussionsupporting

confidence: 63%

Clinically relevant human temporal bone measurements using novel high-resolution cone-beam CT

et al. 2017

View full text Add to dashboard Cite

show abstract

“…A few case reports and series have documented SCDs in children [9, 13–16, 18, 20]. In children with enlarged vestibular aqueduct syndrome, SCDs have been documented as early as 3 months of age by HRCT [19]. Chen et al [18] in (1993) found a 13.7% rate of superior SCD in children ages 3–17 years.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of radiographic semicircular canal dehiscence in very young children: an evaluation using high-resolution computed tomography of the temporal bones

et al. 2012

View full text Add to dashboard Cite

Background Previous studies suggest that semicircular canal dehiscences (SCDs) have a developmental origin. Objective We hypothesized that if SCDs originate during development, incidence of radiographic SCDs in young children will be higher than in adults. Materials and methods Thirty-four temporal bone HRCTs of children younger than 2 years and 40 temporal bone HRCTs of patients older than 18 years were reformatted and re-evaluated for presence of SCD or canal thinning. Results were compared with indications for HRCT and clinical information. Results SCDs were detected in 27.3% of children younger than 2 years of age (superior, 13.8%; posterior, 20%) and in 3% of adults (P≤0.004). Of children with one radiographic dehiscence, 55.6% had multiple and 44% had bilateral SCDs on HRCT. No lateral canal SCDs were present. Thinning of bone overlying the semicircular canals was found in 44% of children younger than 2 years and 2.5% of adults (P<0.0001). Conclusion SCDs are more common on HRCTs of very young children. This supports the hypothesis that SCDs originate from discontinuation of bone deposition/maturation. However, SCDs on imaging do not necessarily correlate with canal dehiscence syndrome and should therefore be interpreted carefully.

show abstract

“…The only report in the English Literature of one case of EVA and contralateral SSCD included standard axial and coronal CT images [17]; the absence of reformatted reconstruction along the plane of SSC could leave some doubts about the real presence of dehiscence of SSC in this case. On the contrary, the axial plane is able to detect EVA, but some Authors [18] proposed that 458 oblique plane could give a more reliable depiction of the vestibular aqueduct than the axial plane, especially in cases of borderline enlargement of the vestibular aqueduct.…”

Section: Discussionmentioning

confidence: 86%