Imaging Features in Patients with Type IP-Ⅱ Inner Ear Malformation
LU Jinshan
CHEN Jie
TANG Liang
ZHOU Hao
ZHAO Xihong
WUMAIER·Yasen
ZHANG Jin
WU Mei
Abstract：Objective To report imaging characteristics in patients with IP-Ⅱ inner ear malformation in order to provide a basis and guidance for better understanding of this malformation.Methods Children with severe to profound sensorineural hearing loss screened from January 2020 to December 2021 were divided into IP-Ⅱ(24 cases),simple en-larged vestibular acqueduct(EVA)(15 cases)and malformation free(28 cases)groups based on strict inclusion criteria and the Sennaroglu's classification.Temporal bone HRCT and inner ear MRI image post-processing were performed to measure indicators including cochlear height and vestibular aqueduct(VA)size.One-way analysis of variance was used to compare each indicator among the three groups.Results There were statistically significant differences in cochlear height,length of cochlear basal turn,diameter of cochlear basal turn,width of cochlear aperture,vestibular length,ves-tibular width,operculum diameter of VA and midpoint diameter of VA among the three groups(P＜0.05).No statistically significant difference was found in operculum diameter of VA,midpoint diameter of VA,the length and width of the en-dolymph sac between the IP-Ⅱ group and the EVA group.Conclusion The typical imaging feature of IP-Ⅲ is fusion of the middle and apical cochlear turns,accompanied by enlargement of vestibule and vestibular aqueducts,as well as en-largement of the endolymphatic duct and endolymphatic sac.These data have important clinical significance for cogniz-ing the IP-Ⅱ inner ear malformation.
Keywords：inner ear malformationmondini deformitycochlear implantation
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 779-784 )