国产95式步枪所致猪肢体软组织贯通伤的MRI表现与病理学研究

发布时间：2018-03-05 19:00

本文选题：创伤　切入点：枪击　出处：《解放军医学杂志》2008年07期 　论文类型：期刊论文

【摘要】：目的分析猪肢体软组织枪伤后不同时间弹道及周围组织的MRI表现和病理学变化,为枪弹伤早期救治提供理论依据。方法将17只成年猪静脉麻醉后,取仰卧位,将右后肢悬吊固定于致伤架上,用国产95式步枪致伤,射击距离10m。于伤后2、6、12、24、48h及9、18d分别行MRI扫描和病理学检查。结果伤区组织的病理改变可分为原发弹道区、凝固性坏死区、碎裂区和变形区。凝固性坏死区宽1～3mm,在T2WI及增强T1WI上呈现"双低信号"现象;碎裂区和部分变形区呈现"双高信号"现象,但二者不能区分。结论国产95式步枪贯穿肢体软组织后伤区由内向外依次可分为原发弹道区、凝固性坏死区、碎裂区和变形区;MRI可清楚显示原发弹道和凝固性坏死区;碎裂区和变形区为围绕弹道外围的高信号区,病理组织学分界清楚。
[Abstract]:Objective to analyze the MRI features and pathological changes of trajectory and surrounding tissues in different time after gunshot injury of soft tissue of limbs of pigs, and to provide theoretical basis for early treatment of gunshot wounds. Methods 17 adult pigs were anesthetized by intravenous anesthesia and supine position was obtained. The right hind limb was suspended from the injured frame and injured with a home-made 95 rifle. The firing distance was 10m. MRI scanning and pathological examination were performed at 2: 6, 12, 24, 24, 48 and 9, 18 days after injury, respectively. Results the pathological changes of the injured tissue could be divided into primary ballistic area and coagulative necrotic area, and the pathological changes of the injured tissue could be divided into the primary ballistic area and the coagulant necrotic area. Fracture zone and deformation zone. The width of coagulative necrosis zone is 1mm and 3mm, showing "double low signal" phenomenon on T2WI and enhanced T1WI, and "double high signal" phenomenon in fragmentation zone and partial deformation zone. Conclusion 95 rifle can be divided into primary ballistic zone, coagulant necrosis zone, fragmentation area and deformed area from inside to out. MRI can clearly show the primary trajectory and coagulant necrosis area. The fracture zone and deformation zone are high signal areas surrounding the trajectory, and the histopathological boundaries are clear.
【作者单位】：
【基金】：全军医学科研“十一五”计划攻关课题资助项目(06G033)
【分类号】：R82

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