AJDRAJNR - American Journal of Neuroradiology

Published ahead of print on June 26, 2008
doi: 10.3174/ajnr.A1170
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Differentiation Between Classic and Atypical Meningiomas with Use of Diffusion Tensor Imaging

C.-H. Toha, M. Castilloc, A.M.-C. Wonga, K.-C. Weib, H.-F. Wonga, S.-H. Nga and Y.-L. Wana

a Departments of Medical Imaging and Intervention, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Tao-Yuan, Taiwan
b Neurosurgery, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Tao-Yuan, Taiwan
b Department of Radiology, University of North Carolina School of Medicine, Chapel Hill, NC


Figure 1
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  		Fig 1. ADC and FA measurements in a 54-year-old woman with a pathologically confirmed classic meningioma arising in right frontal convexity. A, Axial contrast-enhanced T1-weighted MR image shows an enhancing mass projecting inferiorly into the right frontal lobe. Three ROIs are outlined in the enhancing tumor area, peritumoral edema, and contralateral NAWM, respectively, for measurement of {lambda}1, {lambda}2, {lambda}3, and ADC and FA values. FA (B) and ADC (C) maps show location of ROIs. The tumor is isointense to the cortex on axial diffusion-weighted trace image (D).


Figure 2
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  		Fig 2. A 64-year-old woman with an atypical meningioma in the right frontal region confirmed on pathologic examination. Axial contrast-enhanced T1-weighted MR image (A) shows an enhancing mass in the right parasagittal frontal lobe. Three ROIs are outlined in the enhancing tumor area, peritumoral edema, and contralateral NAWM, respectively, for measurement of {lambda}1, {lambda}2, {lambda}3, and ADC and FA values. FA (B) and ADC (C) maps show location of ROIs. The tumor is hyperintense to the cortex on axial diffusion-weighted trace image (D).





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X