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Diffusion Tensor Imaging in Children with Periventricular Leukomalacia: Variability of Injuries to White Matter Tracts

L.M. Nagaea,b,c,d, A.H. Hoon, Jr.b, E. Stashinkob, D. Lina, W. Zhangb, E. Leveyb, S. Wakanab, H. Jianga, C.C. Leitec, L.T. Lucatoc, P.C.M. van Zijla,b, M.V. Johnstonb and S. Moria,b

a Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Md
b Kennedy Krieger Institute, Johns Hopkins University, Baltimore, Md
c Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
d Hospital Israelita Albert Einstein, São Paulo, Brazil


Figure 1
Figure 1
Figure 1
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  		Fig 1. A, Description of the white matter tract identification protocol. Representative color-coded map or MPRAGE images are shown along with localization in a reference image (B).


Figure 2
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  		Fig 2. A and B, Examples of the scoring system obtained from a 7-year-old healthy control (score 0) and patients with PVL (scores 1 and 2). See Fig 1 for abbreviations.


Figure 3
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  		Fig 3. Histogram of frequency of scores for individual tracts. A, tracts predominately related to motor pathways; B, tracts predominately related to sensory motor pathways; and C, association and commissural fibers. L indicates left; R, right; CPT/CST, corticopontine/corticospinal tracts; PLIC, posterior limb of the internal capsule; CP, cerebral peduncles; RLIC, retrolenticular part of the internal capsule; PTR, posterior thalamic radiation; SCR, superior corona radiata; IFO/ILF, inferior fronto-occipital/inferior longitudinal fasciculi; SLF, superior longitudinal fasciculus; CC-genu, corpus callosum-genu; CC-body, corpus callosum-body; CC-splenium, corpus callosum-splenium.


Figure 4
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  		Fig 4. Examples of fiber tracking in 3 age-matched children. AP indicates anteroposterior.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X