Does CISS MRI Reliably Depict the Endolymphatic Duct in Children with and without Vestibular Aqueduct Enlargement?
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View abstract on PubMed
Summary
This summary is machine-generated.Magnetic resonance (MR) imaging can help diagnose enlarged vestibular aqueduct (EVA) in hearing-impaired children. A visible endolymphatic duct on MR scans strongly indicates EVA, offering a radiation-free diagnostic alternative.
Area Of Science
- Radiology
- Pediatric Imaging
- Otolaryngology
Background
- High-resolution CT is standard for diagnosing enlarged vestibular aqueduct (EVA).
- MR imaging offers a radiation-free alternative for evaluating hearing-impaired children.
- This study assesses MR imaging's reliability in detecting the endolymphatic duct and EVA.
Purpose Of The Study
- To evaluate the reliability of MR imaging in demonstrating the endolymphatic duct and EVA in hearing-impaired children.
- To compare MR imaging findings with high-resolution CT for EVA diagnosis.
Main Methods
- Retrospective review of temporal bone CT and MR imaging (2017-2020) in hearing-impaired children.
- Categorization of EVA using Cincinnati criteria on CT.
- Assessment of endolymphatic duct visibility (types 1-3) on CISS MR imaging.
- Statistical analysis including mixed-effect logistic regression and interreader agreement (Fleiss κ).
Main Results
- 196 ears from 98 children were analyzed; 20.4% had EVA on CT.
- Endolymphatic duct visibility on MR was type 1 (74.0%), type 2 (14.8%), and type 3 (11.2%).
- Significant association (P < .01) found between EVA+ status and endolymphatic duct visibility.
- Type 3 endolymphatic duct visibility was present in 55.0% of EVA+ ears versus 0% of EVA- ears.
- Predicted probability of EVA+ for type 3 endolymphatic duct was 0.997.
Conclusions
- CISS MR imaging underdiagnoses EVA but is highly specific.
- A type 3 endolymphatic duct on MR imaging predicts EVA with >99% likelihood.
- MR imaging is a valuable, radiation-free tool for evaluating EVA in conjunction with CT.
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