Preoperative dual imaging evaluation of profound sensorineural hearing loss in patients for cochlear implantation

IF 0.1 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
A. Malhotra, L. Kumar, R. Rastogi, Vijai Pratap
{"title":"Preoperative dual imaging evaluation of profound sensorineural hearing loss in patients for cochlear implantation","authors":"A. Malhotra, L. Kumar, R. Rastogi, Vijai Pratap","doi":"10.4103/wajr.wajr_14_19","DOIUrl":null,"url":null,"abstract":"Background: Profound sensorineural hearing loss (SNHL) may be the result of major inner ear structural malformations, and cochlear implantation remains the only viable treatment option. High-resolution computed tomography (HRCT) and magnetic resonance imaging (MRI) are indispensable for optimum preoperative implant workup and thus play a vital role in patient selection, pre-implantation counseling, and surgical management. Aim and Objectives: The aim of this study is to evaluate patients with profound SNHL for cochlear implantation preoperatively on both HRCT and MRI and to compare imaging findings in both modalities. Materials and Methods: This longitudinal prospective study was conducted in the Department of Radiology of a tertiary care-based hospital in North India. A total of 45 patients (90 temporal bones) with clinically diagnosed bilateral profound SNHL were included in the study. Patients with a previous history of temporal bone injury were excluded from the study. All cases were evaluated on both 128 slice Philips computed tomography (CT) machine and 1.5 Tesla Siemens Magnetom MRI scanner. Each temporal bone was systematically analyzed for anatomical and structural abnormalities. Results: Both high-resolution CT and MRI played vital roles in the workup of patients with profound SNHL for cochlear implantation and allowed accurate assessment of critical inner ear abnormalities. Cochlear malformations (30%) were responsible for the majority of structural abnormalities in this study with Type II incomplete partition (8.9%) being the most common. Cochlear nerve deficiency was seen in 20 cases (22.2%) and was diagnosed only on MRI. Similarly, early fibrosis and abnormal signal intensity were also detected only on MRI, which were missed on CT. Conclusions: Both high-resolution CT and high magnet MRI complement each other and reduce the chances of missing critical findings, which are crucial for surgical management and planning. Thus, it is advisable to perform dual imaging with both modalities wherever and whenever possible, to offer maximum information to treating surgeon preoperatively.","PeriodicalId":29875,"journal":{"name":"West African Journal of Radiology","volume":null,"pages":null},"PeriodicalIF":0.1000,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"West African Journal of Radiology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/wajr.wajr_14_19","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}
引用次数: 0

Abstract

Background: Profound sensorineural hearing loss (SNHL) may be the result of major inner ear structural malformations, and cochlear implantation remains the only viable treatment option. High-resolution computed tomography (HRCT) and magnetic resonance imaging (MRI) are indispensable for optimum preoperative implant workup and thus play a vital role in patient selection, pre-implantation counseling, and surgical management. Aim and Objectives: The aim of this study is to evaluate patients with profound SNHL for cochlear implantation preoperatively on both HRCT and MRI and to compare imaging findings in both modalities. Materials and Methods: This longitudinal prospective study was conducted in the Department of Radiology of a tertiary care-based hospital in North India. A total of 45 patients (90 temporal bones) with clinically diagnosed bilateral profound SNHL were included in the study. Patients with a previous history of temporal bone injury were excluded from the study. All cases were evaluated on both 128 slice Philips computed tomography (CT) machine and 1.5 Tesla Siemens Magnetom MRI scanner. Each temporal bone was systematically analyzed for anatomical and structural abnormalities. Results: Both high-resolution CT and MRI played vital roles in the workup of patients with profound SNHL for cochlear implantation and allowed accurate assessment of critical inner ear abnormalities. Cochlear malformations (30%) were responsible for the majority of structural abnormalities in this study with Type II incomplete partition (8.9%) being the most common. Cochlear nerve deficiency was seen in 20 cases (22.2%) and was diagnosed only on MRI. Similarly, early fibrosis and abnormal signal intensity were also detected only on MRI, which were missed on CT. Conclusions: Both high-resolution CT and high magnet MRI complement each other and reduce the chances of missing critical findings, which are crucial for surgical management and planning. Thus, it is advisable to perform dual imaging with both modalities wherever and whenever possible, to offer maximum information to treating surgeon preoperatively.
人工耳蜗植入患者深部感音神经性听力损失的术前双影像学评价
背景:重度感音神经性听力损失(SNHL)可能是内耳结构畸形的结果,人工耳蜗植入仍然是唯一可行的治疗选择。高分辨率计算机断层扫描(HRCT)和磁共振成像(MRI)对于最佳的术前植入工作是必不可少的,因此在患者选择,植入前咨询和手术管理中起着至关重要的作用。目的和目的:本研究的目的是评估深度SNHL患者术前人工耳蜗植入的HRCT和MRI,并比较两种方式的影像学结果。材料和方法:这项纵向前瞻性研究是在印度北部一家三级医院的放射科进行的。本研究共纳入45例临床诊断为双侧深部SNHL的患者(90块颞骨)。既往有颞骨损伤史的患者被排除在研究之外。所有病例均在128层飞利浦计算机断层扫描(CT)和1.5特斯拉西门子磁通MRI扫描仪上进行评估。系统分析各颞骨解剖和结构异常。结果:高分辨率CT和MRI在深度SNHL患者的人工耳蜗植入检查中发挥了至关重要的作用,可以准确评估内耳关键异常。耳蜗畸形(30%)是本研究中耳蜗结构异常的主要原因,其中II型不完全分割(8.9%)最为常见。耳蜗神经缺损20例(22.2%),仅MRI诊断。同样,早期纤维化和异常信号强度也仅在MRI上检测到,而在CT上未被发现。结论:高分辨率CT和高磁共振成像相辅相成,减少了遗漏关键表现的机会,这对手术管理和计划至关重要。因此,无论何时何地,只要有可能,建议采用两种方式进行双重成像,以便为术前治疗外科医生提供最大限度的信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
West African Journal of Radiology
West African Journal of Radiology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信