Abstract
ObjectiveThe purpose of this study was to compare between Valvassori and Cincinnati criteria and to correlate between vestibular aqueduct measurements made in axial plane with those made in 45° oblique reformats. Patients and methodsThe study group included 61 children with LVAS. All participants were subjected to full Audiological evaluation and MDCT scanning in axial plane. The axial data were transferred to workstation for post-processing with multiplanar reformatting software in order to obtain the 45° oblique reformats. Vestibular aqueduct measurements were made at 4 points: midpoint and operculum in both the axial plane and 45° oblique reformats. Results100% (122 ears) were diagnosed according to Cincinnati criteria, while 81% (99 ears) of children with LVAS fit Valvassori criterion, and 19% were (23 ears) missed. There were statistically significant correlations among the diameters of the VA in the axial plane (midpoint and operculum) and their counterparts in the 45° oblique reformats. Values equal to or greater than 1.2mm in the midpoint and 1.3mm in the operculum are proposed to be the criteria to diagnose LVA in the 45° oblique reformats. ConclusionCincinnati criteria are more sensitive than Valvassori criteria in the diagnosis of LVAS.
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