Imaging Features Differentiating Vestibular Ganglion from Intracanalicular Schwannoma on Single-Sequence Non-Contrast Magnetic Resonance Imaging Study
Autor: | Yi Wei Wu, Julian Pn Goh, Amit Karandikar, Tiong Yong Tan |
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Rok vydání: | 2020 |
Předmět: |
Adult
Male Scarpa's ganglion Fundus (eye) Schwannoma 030218 nuclear medicine & medical imaging Diagnosis Differential Young Adult 03 medical and health sciences 0302 clinical medicine Predictive Value of Tests otorhinolaryngologic diseases medicine Humans Spiral ganglion Aged Retrospective Studies Aged 80 and over Vestibular system medicine.diagnostic_test Receiver operating characteristic business.industry Magnetic resonance imaging Neuroma Acoustic General Medicine Middle Aged Neuroma medicine.disease Magnetic Resonance Imaging Semicircular Canals medicine.anatomical_structure ROC Curve Female sense organs Spiral Ganglion Nuclear medicine business 030217 neurology & neurosurgery |
Zdroj: | Annals of the Academy of Medicine, Singapore. 49:65-71 |
ISSN: | 0304-4602 |
Popis: | Introduction: This study aimed to identify imaging features on single-sequence noncontrast magnetic resonance imaging (MRI) that differentiate the vestibular ganglion from small intracanalicular schwannomas. Materials and Methods: Ninety patients (42 men and 48 women; age: 24‒87 years old) with 102 internal auditory canal (IAC) nodules (59 vestibular ganglia and 43 intracanalicular schwannoma) who underwent both singlesequence T2-weighted (T2W) non-contrast enhanced MRI studies and contrast-enhanced T1-weighted (T1W) MRI studies between May 2012 and April 2017 were evaluated. The length, width, distance to the IAC fundus and length/width ratios for all lesions were obtained and compared among groups. Diagnostic performance and cutoff values of the parameters were evaluated with receiver operating characteristics curve analysis. Area under the curve (AUC) value was calculated. Results: Vestibular ganglia have significantly smaller lengths and widths compared to intracanalicular vestibular schwannomas (1.7 ± 0.4 mm and 1.0 ± 0.2 mm versus 5.6 ± 3.0 mm and 3.7 ± 1.5 mm). They are more fusiform in shape compared to vestibular schwannomas (length/width ratio: 1.8 ± 0.4 versus 1.5 ± 0.4). The lesion width demonstrated the highest diagnostic performance (AUC: 0.998). Using a cutoff width of |
Databáze: | OpenAIRE |
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