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《Chinese Journal of Medical Imaging Technology》 2010-09
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A longitudinal 3D-TSE-T2 weighted imaging observation on early Wallerian degeneration of corticospinal tract in cat brain

ZHANG Min1, YU Chun-shui1, QIN Wen1, PIAO Yue-shan2, GUO De-yu3, XUAN Yun4,ZHU Zi-xin3, TIAN Xin3, LI Kun-cheng1(1.Department of Radiology, 2.Department of Pathology, 3.Department of Experimental Animal, Xuanwu Hospital, Capital Medical University, Beijing 100053, China; 4.Staff Room of Anatomy, Tianjin Medical University, Tianjin 300070, China)  
Objective To observe the signal intensity dynamic process of early Wallerian degeneration (WD) of the corticospinal tract (CST) in cat brain on 3D-TSE-T2 weighted imaging (3D-TSE-T2WI). Methods The origin cortex regions of the unilateral CSTs in 8 cats were cut off to establish the models of Wallerian degeneration, and longitudinal T2WI were performed repeatedly at 8 consecutive time points (before modeling and 2, 4, 6, 8, 10, 20 and 30 days after brain surgery). The values of T2 signal intensity of bilateral CSTs were obtained using a region of interest method. The ratios of T2 signal intensity (rT2s) between the affected and unaffected sides of the CSTs were calculated. Results During the first 4 days, there was no obvious abnormal signal on T2WI, and the rT2s did not change significantly in the degenerated CSTs. From 6 to 10 days, the rT2s decreased progressively with abnormal low signals on T2WI. From 10 to 30 days, the rT2s stabilized relatively still with low signals on T2WI, but on 30th day the rT2s began to increase. Conclusion T2WI can be used to detect early WD sensitively.
【Fund】: 国家自然科学基金(30670601)
【CateGory Index】: R741
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【Citations】
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1 CUI Yi,HOU Jin-wen,MENG Xiang-shui,LIU Ying,ZHANG Kai(Department of Radiology,Qilu Hospital of Shandong University,Jinan 250012,Shandong,China);Role of diffusion tensor imaging in diagnosing Wallerian degeneration[J];Journal of Shandong University(Health Sciences);2006-07
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3 LI Jing1,2,LI Cheng2,WANG Wei2(1.Department of Radiology,School of Medical Science and Laboratory Medicine of Jiangsu University,Zhenjiang 212001,China;2.Department of Imaging,the First People's Hospital of Yangzhou,Yangzhou 225001,China);Diffusion tensor tractography quantitative assessment of the damage of corticospinal tract in acute intracerebral hemorrhage[J];Chinese Journal of Medical Imaging Technology;2009-07
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【Co-citations】
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