Diffusion Tensor Imaging Study of Central Auditory Pathway in Patients with Acquired Sensorineural Hearing Loss
10.3969/j.issn.1006-7299.2015.02.006
- VernacularTitle:后天性感音神经性聋患者听觉中枢磁共振弥散张量成像研究
- Author:
Kang ZHU
;
Ying HE
;
Jin HOU
;
Jing YAN
;
Guoxi ZHENG
;
Min XU
;
Zhilan BAI
- Publication Type:Journal Article
- Keywords:
Aquired sensorineural hearing loss;
Diffusion tensor imaging;
Auditory pathway
- From:
Journal of Audiology and Speech Pathology
2015;(2):143-146
- CountryChina
- Language:Chinese
-
Abstract:
Objective Magnetic resonance diffusion tensor imaging (DTI) was applied to study the cantral auditong pathway in patients with .Methods A total of 30 cases of acquired hearing loss patients were divided into 2 groups ,group 1 (15 ,sudden deafness) and group 2 (15 ,with duration up to 2 years SNHL group from the time of onset) .A total of 15 cases of normal-hearing patients on MRI examination were selected as the control group for the same period .All subjects received DTI of whole brain .The values of the whole brain DTI were obtained from the inferior colliculus and lateral lemniscus ,consisting of the fractional anisotropy (FA) ,radial diffusion (RD) ,axi‐al dispersion (AD) and mean diffusivity .Results There were significant differences(P<0 .05) in FA of bilateral in‐ferior colliculus among sudden deafness group ,SNHL of 2 -year -history group and the control group by ANO‐VA .FA of inferior colliculus in the control group was higher than that of in the SNHL group ,but lower than that of in the sudden deafness group .RD of lateral lemniscus in the SNHL group was higher than that of in the sudden deafness group(P<0 .05) ,MD of lateral lemniscus in the sudden deafness group was higher among the other 2 groups ,and there were signigicant(P<0 .05) .For AD of the inferior colliculug and lateral lemniscus ,there were no differ‐ences among the 3 groups (P>0 .05) .Conclusion There was no obviously abnormal change on the central auditory processing in sudden deafness group ,but significant destruction was found on 2 years SNHL group .It indicated that central auditory processing of the history of sensorineural deafness affected the structural changes of the central au‐ditory pathway .
