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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates

Research ArticleBrain

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

E.K. Herrmann, K. Hahn, C. Kratzer, I. von Seggern, C. Zimmer and E. Schielke
American Journal of Neuroradiology June 2006, 27 (6) 1245-1251;
E.K. Herrmann
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K. Hahn
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C. Kratzer
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I. von Seggern
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C. Zimmer
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E. Schielke
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Article Figures & Data

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  • Fig 1.
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    Fig 1.

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

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    Fig 2.

    Histogram of the VBR delta values of the 40 patients.

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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.

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    Fig 4.

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

Tables

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    TABLE 1:

    Etiology of acute encephalitis in 40 patients followed up by MR imaging

    Etiologyn (%)
    Varicella zoster virus3 (7.5%)
    Cytomegalovirus2 (5%)
    Mycoplasma pneumoniae3 (7.5%)
    Listeria monocytogenes3 (7.5%)
    Mycobacterium tuberculosis1 (2.5%)
    ADEM (acute disseminated encephalomyelitis)2 (5%)
    Undetermined*26 (65%)
    Total number40
    • * In 7 of these patients, herpes simplex encephalitis was presumed but could not be proved by polymerase chain reaction or by increase of serum antibody titer or cerebrospinal fluid/serum-antibody index.

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    TABLE 2:

    Modified Rankin scale adapted for 40 patients suffering from acute encephalitis 6–84 months previously

    RankDescriptionNo. of patients
    0Complete recovery21
    1Mild residual symptoms without impairment in activities of daily living11
    2Slight disability: unable to carry out all previous activities but independent in activities of daily living5
    3Moderate disability: requiring some help for activities of daily living3
    4Moderately severe disability: requiring help for activities of daily living0
    5Severe disability: bedridden, requiring constant nursing care and attention0
    • View popup
    TABLE 3:

    VBR delta values of certain subgroups and P values yielded by means of U tests

    Clinical FactornVBR Delta Median (%)VBR Delta Range (%)P
    Stay on intensive care unit
        Yes1612.420–1020.027
        No244.40−5–26
    Epileptic seizures during the acute stage
        >2/status ep.926.030–910.021
        0–2314.65−5–102
    Epilepsy at follow-up
        Yes826.60–910.015
        No325.07−5–102
    • Note:—VBR indicates ventricle brain ratio.

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American Journal of Neuroradiology: 27 (6)
American Journal of Neuroradiology
Vol. 27, Issue 6
June 2006
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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. Herrmann, K. Hahn, C. Kratzer, I. von Seggern, C. Zimmer, E. Schielke
American Journal of Neuroradiology Jun 2006, 27 (6) 1245-1251;
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Cite this article
E.K. Herrmann, K. Hahn, C. Kratzer, I. von Seggern, C. Zimmer, E. Schielke
Status Epilepticus as a Risk Factor for Postencephalitic Parenchyma Loss Evaluated by Ventricle Brain Ratio Measurement on MR Imaging
American Journal of Neuroradiology Jun 2006, 27 (6) 1245-1251;

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