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OtherBRAIN

Diffusion-Weighted MR Imaging in Early Diagnosis and Prognosis of Hypoglycemia

L. Lo, C.H.A. Tan, T. Umapathi and C.C. Lim
American Journal of Neuroradiology June 2006, 27 (6) 1222-1224;
L. Lo
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C.H.A. Tan
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T. Umapathi
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C.C. Lim
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    Fig 1.

    Case 1, a 65-year-old man in a diabetic coma with seizures.

    A, Fast spin-echo fluid attenuated inversion recovery (9000 milliseconds/110 milliseconds effective/2200 milliseconds [TR/TE/TI]) MR image shows bilateral hyperintensity of the cortex over the temporal and occipital lobes.

    B and C, Diffusion-weighted (10000/105, b value 1000 seconds/mm2) MR images showing corresponding hyperintensity in the cortex.

    D and E, ADC maps at the same levels as B and C show decreased ADC in these lesions (618 × 10−3 mm2/s) compared with normal white matter (819 × 10−3 mm2/s).

  • Fig 2.
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    Fig 2.

    Case 2, a 69-year-old diabetic man with atrial fibrillation who suddenly became unresponsive.

    A, T2-weighted (3000/80 effective) MR image shows subtle increased intensity in the splenium of the corpus callosum (compared with the genu), posterior limbs of the internal capsules, and thalami bilaterally.

    B, Corresponding diffusion-weighted (4200/95, b value 1000 seconds/mm2) MR image shows bilaterally symmetrical hyperintensities in the posterior limbs of the internal capsules and the splenium of the corpus callosum.

    C, ADC map corresponding to B shows decreased ADC of the splenium of the corpus callosum (485 × 10−3 mm2/s) compared with the genu (890 × 10−3 mm2/s)

    D, DW MR image 12 hours later shows complete normalization of previously noted lesions.

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American Journal of Neuroradiology: 27 (6)
American Journal of Neuroradiology
Vol. 27, Issue 6
June 2006
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Diffusion-Weighted MR Imaging in Early Diagnosis and Prognosis of Hypoglycemia
L. Lo, C.H.A. Tan, T. Umapathi, C.C. Lim
American Journal of Neuroradiology Jun 2006, 27 (6) 1222-1224;

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Diffusion-Weighted MR Imaging in Early Diagnosis and Prognosis of Hypoglycemia
L. Lo, C.H.A. Tan, T. Umapathi, C.C. Lim
American Journal of Neuroradiology Jun 2006, 27 (6) 1222-1224;
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