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Diffusion Tensor Imaging in Idiopathic Acute Transverse Myelitis

Joon Woo Lee1, Kyung Seok Park2, Jae Hyoung Kim1, Ja-Young Choi3, Sung Hwan Hong3, Seong-Ho Park2 and Heung Sik Kang1

1 Department of Radiology, Seoul National University Bundang Hospital, Gyeonggi-do, Korea.
2 Department of Neurology, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-707, Korea.
3 Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.


Figure 1
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  		Fig. 1A —29-year-old woman with idiopathic acute transverse myelitis (patient no. 3). T2-weighted sagittal image shows hyperintense lesion in spinal cord from C2 to C6 level. Lesion level was determined to be center of T2-hyperintense lesion in spinal cord. Proximal normal-appearing spinal cord level (PNLSC) was determined as level with T2-isointense spinal cord and one spine segment proximal to cranial end of T2-hyperintense spinal cord lesion. Distal normal-appearing spinal cord level (DNLSC) was determined as level with T2-isointense spinal cord and one spine segment distal to caudal end of T2-hyperintense spinal cord lesion.

 

Figure 2
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  		Fig. 1B —29-year-old woman with idiopathic acute transverse myelitis (patient no. 3). Diffusion tensor image of fractional anisotropy (FA) map (B) and color tensor map image (C) show decreased FA in lesion. FA measurements were made in spinal cord at three different levels (lesion, proximal normal-appearing spinal cord, and distal normal-appearing spinal cord) in most accurate B0 axial image (D).

 

Figure 3
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  		Fig. 1C —29-year-old woman with idiopathic acute transverse myelitis (patient no. 3). Diffusion tensor image of fractional anisotropy (FA) map (B) and color tensor map image (C) show decreased FA in lesion. FA measurements were made in spinal cord at three different levels (lesion, proximal normal-appearing spinal cord, and distal normal-appearing spinal cord) in most accurate B0 axial image (D).

 

Figure 4
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  		Fig. 1D —29-year-old woman with idiopathic acute transverse myelitis (patient no. 3). Diffusion tensor image of fractional anisotropy (FA) map (B) and color tensor map image (C) show decreased FA in lesion. FA measurements were made in spinal cord at three different levels (lesion, proximal normal-appearing spinal cord, and distal normal-appearing spinal cord) in most accurate B0 axial image (D).

 

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