The canparative study of small inner ear malformation of sensorineural hearing loss chuldren and norraul children of the comparis

LIU Jun; LI Changqin

Abstract：Objective The purpose of this study is to use the HRCT standard measurement methods of the inner ear to observe the inner ear malformations in patients suffering from congenital deafness and to explore its diagnostic value in the diagnosis of con -genital sensorineural hearing loss .Methods The experimental group includes a total of 50 patients with congenital sensor neural hearing loss of the inner ear , while the control group included 152 normal inner ear scan image .The measurements of this study were in the axial CT scanned images to obtain the measurement data , Two senior radiologists used the double blind means to meas-ure all the image data , including the width , highness of SSCC , LSCC, PSCC ( posterior semicircular canal ) , cochlea and vesti-bule.The corresponding data for the control groups and experimental groups were compared using the “t” test.Results The axi-al CT images of the temporal can display the anatomic structure primeply .There were significant differences in the measurements of the bony island width of the superior semicircular canal (normal group:(4.54 ±0.39) mm, SNHL group:(4.32 ±0.45)mm, bony island width of the lateral semicircular canal normal group:(3.06 ±0.36) mm, SNHL group:(3.03 ±0.03) mm and maxi-mal height of cochlea(normal group:(4.46 ±0.11) mm, SNHL group:(4.51 ±0.09) between two groups ( P <0.05).Con-clusion To measure the maximum height of the cochlea , the width of the semicircular canal and lateral semicircular canal bone island determine some subtle deformities .