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Value of diagnosis and differential diagnosis of MRI and MR spectroscopy in gliomatosis cerebri.

Abstract：

PURPOSE:The purpose of this study was to characterize gliomatosis cerebri on magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS), and to analyze the value of these two techniques in diagnosis and differential diagnosis of gliomatosis cerebri. MATERIALS AND METHODS:MR images of 14 patients with gliomatosis cerebri were reviewed retrospectively; seven of the patients also underwent MRS (single-voxel point-resolved spectroscopy, and chemical-shift imaging point-resolved spectroscopy). Tumorous were confirmed by surgery and biopsy. The distribution, extension and signal features of lesions were assessed, and the MR spectroscopy results were analyzed. RESULTS:Tumors involved at least two lobes of the brain in all patients. Widespread invasion with isointensity or hypointensity on T1-weighted MR images and hyperintensity on T2-weighted images were found while no prominent necrosis, hemorrhage or contrast enhancement was found. All patients who underwent MRS showed elevated Cho/Cr and Cho/NAA levels as well as decreased NAA/Cr ratios in the abnormal areas on T2-weighted images, three of which showed a lactate doublet. Anaplastic lesions had higher Cho/NAA levels in three cases. Abnormality of metabolism was also seen in the margin of the lesion that was normal on T2-weighted images. CONCLUSION:MRI and MRS are valuable techniques for diagnosis and differential diagnosis of gliomatosis cerebri. Combining clinical information and MRI findings, as well as MRS, is crucial for making a definitive diagnosis.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Yu A,Li K,Li H

doi

10.1016/j.ejrad.2006.03.001

subject

Has Abstract

pub_date

2006-08-01 00:00:00

pages

216-21

issue

2

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(06)00084-2

journal_volume

59

pub_type

杂志文章

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