| 犬股骨头部分血管结扎早期股骨头坏死磁共振病理基础实验研究 |
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| 引用本文： | 刘兆玉,张伟,严学君,吴振华,潘诗农,李文达,刘东风,杨军,王云钊.犬股骨头部分血管结扎早期股骨头坏死磁共振病理基础实验研究[J].中国医科大学学报,1997(3). |
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| 作者姓名： | 刘兆玉 张伟 严学君 吴振华 潘诗农 李文达 刘东风 杨军 王云钊 |
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| 作者单位： | 朝阳市中心医院放射科，北京积水潭医院放射病理研究所 |
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| 摘 要： | 目的：观察犬早期股骨头缺血坏死的ＭＲＩ图像特点，病理演变过程，探讨ＭＲＩ信号的病理基础。方法：手术结扎一侧股骨头部分滋养动脉，术后３、７、１４、３０及６０ｄ做磁共振及病理学检查。结果：术后７ｄＭＲＩ图像见有散在点状低信号改变，早期股骨头缺血坏死ＭＲ信号的病理基础是：１．骨髓细胞增大破裂的不定形细胞碎片。２．炎性细胞浸润。３．少量间充质组织形成的混合物。结论：磁共振是早期发现股骨头坏死最敏感的方法，早期股骨头缺血坏死ＭＲＩ信号在Ｔ１及Ｔ２加权图像上均呈低信号改变
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| 关 键 词： | 股骨头缺死坏死 核磁共振 病理学 犬 |
The MRI and Pathology of Early-stage Ischemic Necrosis in Canine Femoral Head Induced by Ligation of Partial Nutrient Arteries |
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| Liu Zhaoyu,Zhang Wei,Yan Xuejun,et al.The MRI and Pathology of Early-stage Ischemic Necrosis in Canine Femoral Head Induced by Ligation of Partial Nutrient Arteries[J].Journal of China Medical University,1997(3). |
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| Authors: | Liu Zhaoyu Zhang Wei Yan Xuejun |
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| Abstract: | Objective: to observe the characteristics of MRI and pathological course of early ischemic necrosis of femoral head (INFH), and to study the pathological bases of MRI signal in early INFH. Method: 11 adult dogs underwent partial ligation of nutrient arteries in either side of femoral heads. 3,7,14,30 and 60 days after operation, they experienced MRI and pathological examination consecutively. Result: Scattered spotted low signal appeared in MRI after ligation. The pathologic bases attributable to the appearance of early-stage INFH in MRI were: 1 Amorphous fragments of enlarged and ruptured marrow cells. 2 Infiltration in inflammatory cells. 3 Small amount of mixture of mesenchymal tissue. Conclusion: Low signal appeared early at T 1 and T 2 WI in MRI. MRI is the most sensitive approach to early detection of INFH. |
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| Keywords: | ischemic necrosis of femoral head MRI pathology dog |
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