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MSCT灌注对正常股骨头骨骺血供特征的研究

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摘要 目的 运用多层螺旋CT灌注技术评价正常乳猪股骨头骨骺、骺板软骨、干骺端的血液供应特点.方法 15只2周大的健康乳猪进行多层螺旋CT电影模式灌注扫描,对生成的动态图像数据进行测量分析,共获得26个股骨头的完整图像资料,统计并比较血流量(BF)、血容量(BV)、平均通过时间(MTT)、对比剂到达峰值时间(TTP),并与相应组织学表现进行对照.结果 骺板软骨的BF[(25.44±7.62)ml/(min.100g)]比骨骺的BF[(10.91±5.72)ml/(min.100g)]有明显增高(P〈0.05).各解剖区域中干骺端的BV[(67.90±17.24)ml/100g]最高(P〈0.05),干骺端的MTT[(405.10±105.18)s]最长(P〈0.01),而骺板与骨骺的MTT比较差异无统计学意义(P〉0.05).各解剖区域中骺板软骨的TTP[(56.98±9.28)s]最短(P〈0.01),骨骺与干骺端的TTP基本相同.组织学发现骨骺、骺板软骨、干骺端的血管密度分布特征与相应部位的CT增强率所提示的血供状态基本吻合.结论 多层螺旋CT灌注能够显示股骨头不同解剖区域的血液灌注特征.
出处 《中国医师杂志》 CAS 2010年第4期520-522,共3页 Journal of Chinese Physician
基金 广东省深圳市科技局科技计划项目资助(项目编号:200703241)
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