DIFFUSION-WEIGHTED MR IMAGING OF INTRACRANİAL CYSTIC LESIONS

Volume: 42 Number: 2 June 1, 2003
  • Bünyamin Güney
  • Ömer Kitiş
  • Cem Çallı
  • Nilgün Yünten
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DIFFUSION-WEIGHTED MR IMAGING OF INTRACRANİAL CYSTIC LESIONS

Abstract

The purpose of the study was to evaluate the signal intensities of cystic or necrotic intracranial lesions on diffusionweighted MRI (DWI) and to investigate the contribution of apparent diffusion coefficient (ADC) values in differential diagnosis. In the study group, there were 24 consecutive patients with intracranial cystic lesions; seven pyogenic abscesses, six epidermoid cysts, four arachnoid cysts, five cystic glioblastomas, and two hydatid cysts. In the MR examinations, conventional spin echo sequences and diffusion-weighted MRI were performed. On DWI imaging, multislice axial plane, single shot, echo-planar spin echo sequence (b=1000 mm2/sn) were used. The intracranial cystic or necrotic lesion signals on DWI were evaluated comparing with normal appearing brain parenchyma. Ouantitative ADC measurement were performed on ADC map images with ROI (region of interest). While the cystic portions of tumours, arachnoid cysts and hydatic cysts were hypointense, cystic parts of bacterial abscesses and epidermoid cysts were hyperintense compared to brain parenchyma on diffusion-weighted images. On ADC map images, the cystic portions of tumours, arachnoid cysts and hydatic cysts showed marked high ADC values. However, low ADC values were calculated from cystic parts of bacterial abscesses and epidermoid cysts. DWI is useful technique in evaluation of intracranial cystic lesions. DWI can differentiate pyogenic abscesses from cysticnecrotic tumors as well as epidermoid cysts from arachnoid cysts. Cerebral hydatic cysts and arachnoid cysts show same signals on DWI, but these lesions can be distinguished from others by their location (intraaxial/extraaxial).

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Primary Language

Turkish

Subjects

-

Journal Section

-

Authors

Bünyamin Güney

Ömer Kitiş

Cem Çallı

Nilgün Yünten

Publication Date

June 1, 2003

Submission Date

June 1, 2003

Acceptance Date

-

Published in Issue

Year 2003 Volume: 42 Number: 2

IZ

https://izlik.org/JA99EZ98AE

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RIS / Bibtex
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1.Bünyamin Güney, Ömer Kitiş, Cem Çallı, Nilgün Yünten. İNTRAKRANİAL KİSTİK LEZYONLARDA DİFÜZYON-AĞIRLIKLI MR GÖRÜNTÜLEME. EJM [Internet]. 2003 Jun. 1;42(2):107-13. Available from: https://izlik.org/JA99EZ98AE

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