Magnetic resonance imaging in acute mastoiditis

Acta Radiologica Short Reports

Gabriele Hahn³  Michael Laniado³  Volker Gudziol²  Hagen H Kitzler¹  Ivan Platzek³ 

[1]Department of Neuroradiology, Dresden University Hospital, Dresden, Germany

[2]Department of Otolaryngology, Dresden University Hospital, Dresden, Germany

[3]Department of Radiology, Dresden University Hospital, Dresden, Germany

关键词: children;    magnetic resonance imaging (MRI);    infection;    Mastoiditis;   

Others  :  923880
DOI  :  10.1177/2047981614523415

 received in 2013-12-02, accepted in 2014-01-20,  发布年份 2014

【 摘 要 】

Background In cases of suspected mastoiditis, imaging is used to evaluate the extent of mastoid destruction and possible complications.The role of magnetic resonance imaging (MRI) in mastoiditis has not been systematically evaluated.

Purpose To assess the diagnostic performance of MRI in patients with suspected acute mastoiditis.

Material and Methods Twenty-three patients with suspected acute mastoiditis were included in this retrospective study (15 boys, 8 girls; meanage, 2 years 11 months). All patients were examined on a 1.5 T MRI system. The MRI examination included both enhanced andnon-enhanced turbo spin echo (TSE), diffusion-weighted images, and venous time-of-flight magnetic resonance angiography (TOFMRA) for the evaluation of the venous sinuses. Surgical findings, as well as clinical and imaging follow-up were used as thestandard of reference. The sensitivity and accuracy of MRI for mastoiditis and subperiosteal abscesses was calculated.

Results Twenty (87%) of 23 patients had mastoiditis, and 12 (52%) of 23 patients had a subperiosteal abscess in addition to mastoiditis.Mastoiditis and subperiosteal abscesses were identified by MRI in all cases. Sensitivity for mastoiditis was 100%, specificitywas 66%, and accuracy was 86%. Sensitivity for subperiosteal abscesses was 100% and accuracy was 100%.

Conclusion Multiparametric MRI has high accuracy for mastoiditis and subperiosteal abscesses.

【 授权许可】

   
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