The diagnostic value of diffusion-weighted magnetic resonance imaging in soft tissue abscesses.
Eur J Radiol
; 77(3): 490-4, 2011 Mar.
Article
em En
| MEDLINE
| ID: mdl-19748752
ABSTRACT
PURPOSE:
To study the diagnostic value of diffusion-weighted imaging (DWI) in soft tissue abscesses. MATERIALS ANDMETHODS:
Fifty patients were included in this study who were thought to have soft tissue abscess or cystic lesion as a result of clinical and radiological examinations. Localisations of the lesions were 1 periorbital, 3 breast, 14 intraabdominal, and 32 intramuscular lesions. After other radiological examinations, DWI was performed. The signal intensity values of the lesions were evaluated qualitatively according to the hyperintensity on b-1000 DWI, using 1.5 T MR system. All of the lesions were aspirated after DWI, and detection of pus in the aspiration material was accepted as gold standard for the diagnosis of abscess.RESULTS:
In 38 of the 50 patients, hyperintensity was obtained on diffusion-weighted images. False-positive results were maintained in 2 of these patients, and true-positive results were maintained in 36 of them. In 11 of the 50 patients, hypointensity was visualised on diffusion-weighted images. False-negative results were maintained in 3 of these patients, and true-negative results were maintained in 8 of them. An abscess which was seen on post-contrast conventional MRI could not be seen on DWI, and this was regarded as false-negative.CONCLUSION:
The sensitivity and specificity of diffusion-weighted images for detecting soft tissue abscesses were found to be 92% and 80%, respectively. DWI has a high diagnostic value in soft tissue abscesses, and is an important imaging modality that may be used for the differentiation of cysts and abscesses.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças do Tecido Conjuntivo
/
Imagem de Difusão por Ressonância Magnética
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Abscesso
Tipo de estudo:
Diagnostic_studies
Limite:
Adolescent
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Adult
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Aged
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Child
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Child, preschool
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Eur J Radiol
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Turquia