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RESEARCH PRODUCT
Diagnostic performance of reformatted isotropic thin-section helical CT images in the detection of superior semicircular canal dehiscence
Alberto IaiaGianvincenzo Sparaciasubject
AdultMalemedicine.medical_specialtyLabyrinth DiseasesTullio phenomenonDehiscenceCollimated light03 medical and health sciences0302 clinical medicinecomputed tomography; CT; dehiscence of the superior semicircular canal; superior semicircular canal; temporal bone; Tullio phenomenon; Radiology Nuclear Medicine and Imaging; Neurology (clinical)medicineHumansRadiology Nuclear Medicine and imaging030223 otorhinolaryngologyAgedAged 80 and overReceiver operating characteristicSemicircular canalbusiness.industryIsotropycomputed tomographyGeneral MedicineMiddle AgedSemicircular CanalsHelical ctmedicine.anatomical_structureCoronal planeRadiographic Image Interpretation Computer-AssistedFemalesuperior semicircular canaltemporal boneNeurology (clinical)RadiologyHead and Neck ImagingTullio phenomenonmedicine.symptombusinessTomography Spiral Computeddehiscence of the superior semicircular canal030217 neurology & neurosurgeryCTdescription
Purpose The purpose of this article is to assess the diagnostic performance of computed tomography (CT) reformatted images for detection of superior semicircular canal (SSC) dehiscence. Material and methods Forty-two patients, with sound- and/or pressure-induced vestibular symptoms, and 42 control participants underwent helical CT examination with a highly collimated beam (0.5 mm). Reformatted images of the vestibular labyrinth were obtained in the standard axial and coronal planes (group A images), and in a plane parallel and perpendicular to the SSC (group B images). Diagnostic performance obtained by evaluating the group A images alone and the group B images alone was analyzed by using the area under the receiver operating characteristic curve (AUC). Results The diagnostic performance of group A images was AUC = 0.929 with an overall accuracy of 92.9%. The diagnostic performance of group B images was AUC = 0.988 with an overall accuracy of 98.8%. The evaluation of group B images alone showed an improved diagnostic performance over the group A images alone. Conclusion Thin-section 0.5-mm collimation CT with reformatted images oriented in the plane parallel and perpendicular to the SSC improves diagnostic accuracy in assessing for SSC dehiscence in comparison to CT images with reconstructions limited to traditional axial and coronal planes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | The Neuroradiology Journal |