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Imaging of facial neuritis using T2-weighted gradient-echo fast imaging employing steady-state acquisition after

Magali Hector1, Ahmad Alnadji2, Francis Veillon2

  • 1Service de Radiologie 1, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, 1 Avenue Molière, 67200, Strasbourg, France. magali.hector67@gmail.com.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
|September 22, 2020
PubMed
Abstract

Insights

Contrast-enhanced T2-weighted MRI sequences are highly accurate for diagnosing acute facial neuritis. This method offers superior sensitivity and specificity compared to T1-weighted and FLAIR sequences for facial nerve imaging.

Area of Science:

  • Radiology
  • Medical Imaging
  • Neurology

Background:

  • Magnetic Resonance Imaging (MRI) is crucial for diagnosing facial neuritis.
  • Traditionally, gadolinium-enhanced T1-weighted and FLAIR sequences were used.
  • This study investigates a novel approach using contrast-enhanced T2-weighted sequences.

Purpose of the Study:

  • To evaluate the diagnostic value of contrast-enhanced T2-weighted MRI for acute facial neuritis.
  • To compare its efficacy against contrast-enhanced T1-weighted and FLAIR sequences.

Main Methods:

  • Fifty patients with acute unilateral idiopathic peripheral facial neuritis were included.
  • All patients underwent a 3 Tesla MRI scan with T1-weighted, T2-weighted, and FLAIR sequences post-contrast injection.

Main Results:

  • Contrast-enhanced T2-weighted imaging demonstrated the highest accuracy (98.2%) with 94% sensitivity and 100% specificity.
  • Pathological facial nerves showed strong, homogeneous enhancement along their entire course.
  • T1-weighted (94.1% accuracy) and FLAIR (90% accuracy) sequences showed lower diagnostic performance.

Conclusions:

  • Strong and diffuse enhancement of the facial nerve on contrast-enhanced T2-weighted sequences is a key indicator of acute idiopathic facial neuritis.
  • This sequence is more sensitive and specific than T1-weighted and FLAIR sequences for diagnosing facial neuritis.
Keywords:
Contrast-enhanced T1-weighted sequenceContrast-enhanced T2-weighted sequenceFLAIR sequenceFacial neuritisMRI

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