Invastigation of the value of HRCT in the diagnosis of cochlear nerve canal stenosis

ZHAO Xiaoli; WANG Wei; ZHANG Duo; WU Xinhuai

Abstract：Objective To explore the imaging performance and characteristics of cochlear nerve canal stenosis with HRCT and to find the HRCT performance of the disease.Methods A retrospective study was conducted on 15 patients with 19 sides that co-chlear nerve canal width was less then 1.5 mm on HRCT axial measurement, with clinical performance of sensorineural deafness. We observed the morphology, number of lesions and relationship with the surrounding structures and analysed of imaging features. Results In 15 cases with 19 side, 11 cases were unilateral ( right side in 5 cases and the left in 6 cases) , 4 cases were bilateral, mostly with unilateral disease, in which 8 cases of 9 sides accompanied with internal auditory canal stenosis.3 patients with 3 side images showed cochlea nerve canal closed, 12 cases with 16 sides with cochlea nerve management width was 0.3~1.3 cm, the average cochlea nerve canal width was (0.7 ±0.3) mm, of which 10 cases showed that cochlear axis at the bottom of the bell -like structure disappeared.Conclusion In sensorineural hearing loss patients, HRCT has an important value in the diagnosis of cochlear nerve canal stenosis.