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MRI of Knee Osteonecrosis in Children with Leukemia and Lymphoma: Part 1, Observer Agreement

Evguenia J. Karimova1, Shesh N. Rai1, Xin Deng1, David J. Ingle2, Amy C. Ralph2, Michael D. Neel1 and Sue C. Kaste1

1 Department of Radiological Sciences, Division of Diagnostic Imaging, St. Jude Children's Research Hospital, 332 N Lauderdale St., Memphis, TN 38105.
2 Department of Medicine, University of Tennessee College of Medicine, Memphis, TN.


Figure 1
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  		Fig. 1A —10-year-old girl after completion of treatment for acute lymphoblastic leukemia. Coronal unenhanced images of knees show bone marrow edema as focal areas (arrows) of decreased signal on T1 (A) and increased signal on STIR (B) images.

 

Figure 2
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  		Fig. 1B —10-year-old girl after completion of treatment for acute lymphoblastic leukemia. Coronal unenhanced images of knees show bone marrow edema as focal areas (arrows) of decreased signal on T1 (A) and increased signal on STIR (B) images.

 

Figure 3
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  		Fig. 2A —14-year-old boy with acute lymphoblastic leukemia in remission. Coronal unenhanced MR images of knees show punctate foci (arrows) of decreased signal on T1 (A) and increased signal on STIR (B) images.

 

Figure 4
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  		Fig. 2B —14-year-old boy with acute lymphoblastic leukemia in remission. Coronal unenhanced MR images of knees show punctate foci (arrows) of decreased signal on T1 (A) and increased signal on STIR (B) images.

 

Figure 5
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  		Fig. 3A —13-year-old girl with acute lymphoblastic leukemia in remission. Coronal unenhanced MR images of knees show mottled marrow changes (arrows) as poorly defined areas of decreased signal on T1 (A) and increased signal on STIR (B) images.

 

Figure 6
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  		Fig. 3B —13-year-old girl with acute lymphoblastic leukemia in remission. Coronal unenhanced MR images of knees show mottled marrow changes (arrows) as poorly defined areas of decreased signal on T1 (A) and increased signal on STIR (B) images.

 

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