Otologic Imaging Programme

Predicting Challenging Round Window Anatomy for Cochlear Implants

Cochlear implantation is performed for patients with severe hearing loss, some of whom have challenging anatomy for surgery. Using a novel CT reformatting technique that simulates the surgeon’s operative view through the facial recess, Neuroradiologists collaborate with Otorhinolaryngology-Head and Neck Surgeons to predict difficult surgical exposures. This innovation aims to enhance operative preparedness and improve patient outcomes. Current work assessing application of this approach across a broader range of anatomical anomalies and pathologies is on-going. 

Contact

Please contact the following for more information.

• Dr Kheok Si Wei - kheok.si.wei@singhealth.com.sg
• Dr Lishya Liauw - lishya.liauw@singhealth.com.sg

Imaging Endolymphatic Hydrops in Ménière's Disease

We work closely with Otologists and set up an MRI service for patients with symptoms of Ménière's disease using delayed post-gadolinium three-dimensional (3D) inversion recovery (IR) MRI that has enabled visualization of endolymphatic hydrops in the inner ear since 2018. This serves as a foundation to aid in the evaluation of the impact of recent novel therapeutic measures that are changing the landscape for optimal care of these patients. 

Contact

Please contact the following for more information.

• Dr Kheok Si Wei - kheok.si.wei@singhealth.com.sg 
• Dr Lishya Liauw - lishya.liauw@singhealth.com.sg 
• Dr Melissa Lee Shuhui - melissa.lee.s.h@singhealth.com.sg 
• Dr May Lim Yi Shan - may.lim.y.s@singhealth.com.sg 
• Prof Chan Ling Ling - chan.ling.ling@singhealth.com.sg 

Publication:

1. Kheok SW, Ng JH, Liauw L, Tan VYJ, Thong JF. Prediction of Difficult Round Window Visibility during Cochlear Implantation via a Reformatted CT Facial Recess View: A Retrospective Study with Surgical Correlation. AJNR Am J Neuroradiol. 2025 Mar 4;46(3):572-579. doi: 10.3174/ajnr.A8503. 
2. Kheok SW, Chan YM, Chan LL. Imaging of Endolymphatic Hydrops in Ménière's Disease: A Clinical Update. Ann Acad Med Singap. 2020 Dec;49(12):1018-1024. doi: 10.47102/annals-acadmedsg.2020267.