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British Journal of Radiology (2006) 79, e28-e31
© 2006 British Institute of Radiology
doi: 10.1259/bjr/36636301
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Diffusion-weighted imaging findings in Balo concentric sclerosis

E C Kavanagh, MRCPI, FFR, RCSI M K S Heran, MD D M Fenton, MD J S Lapointe, MD R A Nugent, MD and D A Graeb, MD

Division of Neuroradiology, Department of Radiology, Vancouver General Hospital, 899 West 12th Avenue, Vancouver, British Columbia, V5Z 1M9, Canada


Figure 1
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  		Figure 1. A 45 year-old lady with Balo concentric sclerosis. (a) Axial T2 weighted image shows a lesion in the posterior left corona radiata with concentric rings of T2 hyperintensity. (b) Axial diffusion-weighted (b1000) image shows high signal within the centre and periphery of the lesion. An intervening ring of relatively unrestricted diffusion is seen. (c) Axial apparent diffusion coefficient map confirms the presence of restricted diffusion within the most anterior aspect of the outer ring (arrow). The intervening ring of relatively unrestricted diffusion is also confirmed.

 

Figure 2
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  		Figure 2. A 45-year-old lady with Balo concentric sclerosis (MRI performed 7 months after Figure 1Go). (a) Axial T2 weighted image shows reduction in size of the previously identified lesion in the posterior left corona radiata. (b) Axial diffusion-weighted image shows some residual ill-defined high signal in the lesion, consistent with T2 shine-through. (c) Axial apparent diffusion coefficient map shows no evidence of restricted diffusion.

 




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