延髓海绵状血管畸形临床特征与预后相关因素分析  

Effect of Temperature and Elastic Energy on Atom Ordering Behavior of Ni_（75）Al_（21.5）Nb_（3.5） Alloy

作　　者：程立维[1] 王永欣[1] 陈铮[1] 孙朝远[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《热加工工艺》2012年第6期52-56,共5页Hot Working Technology

基　　金：国家自然科学基金资助（51075335,50875217）

摘　　要：目的探讨延髓海绵状血管畸形临床特征和预后相关因素。方法回顾性分析16例延髓海绵状血管畸形病人的临床资料,采用枕下后正中入路手术切除病灶,KPS评分对术前、术后及随访状况进行评估,统计分析影响呼吸、吞咽功能和预后KPS评分的相关因素。结果手术全切除16例,术后平均KPS评分（57.5±15.3）。随访16例,时间3～169.3个月,平均45.2个月,随访平均KPS评分（68.8±30.7）,均无再次出血。高位延髓病灶较低位延髓病灶者呼吸功能差（P=0.034）,而年龄≥40岁者较年龄〈40岁者呼吸功能差（P=0.008）;病灶偏中线一侧较病灶位于或接近中线者吞咽功能差（P=0.034）;年龄≥40岁者较年龄〈40岁者随访KPS低（P=0.036）。结论延髓海绵状血管畸形手术预后较好。对于年龄较大、高位延髓或位置偏中线一侧的病灶应加强围手术期治疗。The transient ordering behaviors of Ni75Al21.5Nb3.5 alloy under the coupling effect of temperature and elastic energy were studied by microscopic phase-field model.The results show that as ξ increasing,the incubation period of L10 gets shorter,the maximum volume fraction of L10 phase becomes larger with longer existence time and more obvious single orientation.At the same temperature,the minimum occupation probability of Ni atom at αII declines with the increase of ξ,while Al and Nb show the opposite tendency.The maximum volume fraction of L10 increases as ξ increases initially and tends towards stability afterwards;under the same value of ξ,the minimum occupation probability of Ni atom at αII declines with the increase of temperature,while Al and Nb show the opposite tendency.The maximum volume fraction of L10 increases with the increase of temperature initially and decreases afterwards.

关 键 词：血管畸形 中枢神经系统 延髓 血管外科手术 预后 

分 类 号：TG146.4[一般工业技术—材料科学与工程]