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Status Epilepticus as a Risk Factor for Postencephalitic Parenchyma Loss Evaluated by Ventricle Brain Ratio Measurement on MR Imaging

E.K. Herrmanna,c, K. Hahna,d, C. Kratzera, I. von Seggerna, C. Zimmerb,e and E. Schielkea,f

a Department of Neurology, Charité, University Medicine Berlin, Campus Mitte, Germany
b Department of Neuroradiology, Charité, University Medicine Berlin, Campus Mitte, Germany
c Department of Hematology, Oncology and Tumor Immunology, Robert Rössle Klinik, HELIOS Klinikum Berlin, Charité, University Medicine Berlin, Campus Buch, Germany
d Department of Neurology, Johns Hopkins Medical Institutions, Baltimore, Md
e Department of Neuroradiology, University of Leipzig, Germany
f Department of Neurology, Vivantes Auguste-Viktoria-Klinikum, Berlin, Germany


Figure 1
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  		Fig 1. Planimetric measurement of the ventricular area and brain area to determine the VBR.


Figure 2
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  		Fig 2. Histogram of the VBR delta values of the 40 patients.


Figure 3
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  		Fig 3. T2-weighted MR images of an 18-year-old man at disease onset with encephalitis of unknown etiology and refractory status epilepticus. Findings of the left image (day of hospital admission) are normal. The right image (11 months later) shows an enlargement of the ventricles and of the subarachnoid space.


Figure 4
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  		Fig 4. Graph shows proportional change of VBR in 40 patients with different outcomes after acute encephalitis. mod. indicates modified.





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