Diffusion-Weighted MR Imaging of Rim-Enhancing Brain Masses: Is Markedly Decreased Water Diffusion Specific For Brain Abscess?

This retrospective study investigated the specificity of restricted water diffusion for the diagnosis of brain abscess. Two of five rim-enhancing brain masses with restricted water diffusion (apparent diffusion coefficient of 0.79 [10(-3) mm(2)/sec] or less) were brain abscesses, but diagnoses in th...

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Veröffentlicht in:	American journal of roentgenology (1976) 2001-09, Vol.177 (3), p.709-712
Hauptverfasser:	Tung, Glenn A, Evangelista, Peter, Rogg, Jeffrey M, Duncan, John A., III
Format:	Artikel
Sprache:	eng
Schlagworte:	Aged Biological and medical sciences Brain Abscess - diagnosis Brain Edema - diagnosis Child, Preschool Diagnosis, Differential Diffusion Echo-Planar Imaging Female Humans Image Enhancement Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Imaging Male Medical sciences Middle Aged Nervous system Radiodiagnosis. Nmr imagery. Nmr spectrometry Retrospective Studies Sensitivity and Specificity
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Zusammenfassung:	This retrospective study investigated the specificity of restricted water diffusion for the diagnosis of brain abscess. Two of five rim-enhancing brain masses with restricted water diffusion (apparent diffusion coefficient of 0.79 [10(-3) mm(2)/sec] or less) were brain abscesses, but diagnoses in the other cases were metastatic squamous cell carcinoma (two cases) and radiation necrosis. Although an important diagnostic sign, restricted water diffusion is not specific for brain abscess.
ISSN:	0361-803X 1546-3141
DOI:	10.2214/ajr.177.3.1770709