Abstract
Objective: To investigate the value of MRI features in preoperative diagnosis of malignant meningioma. Methods: MRI findings in 23 patients with malignant meningioma were analyzed retrospectively, and 34 cases of benign meningiomas in the same period were randomly selected as control. Results: Lobulation, cystic necrosis, tumor-brain interface, tumor-brain interface rim, signal intensity in T1WI, signal inhomogeneity, inhomogeneous contrast enhancement, the degree of contrast enhancement and dural tail sign are related to the gradings of meningioma. Conclusion: Malignant meningiomas do have characteristic MRI features, to evaluate some MRI features has important significance in qualitative diagnosing malignant meningioma before operation.
Key words
meningioma /
magnetic resonance imaging
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ZHANG Yi-nian;HE Ning;ZHOU Jun-lin;WANG Hong-yan.
Value of MRI features in preoperative diagnosis of malignant meningioma[J]. Journal of China Clinic Medical Imaging. 2007, 18(11): 777-780
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