位置:成果数据库 > 期刊 > 期刊详情页
猴大脑中动脉闭塞模型脑缺血半暗带的面积演变
  • ISSN号:1005-1201
  • 期刊名称:《中华放射学杂志》
  • 时间:0
  • 分类:R743.33[医药卫生—神经病学与精神病学;医药卫生—临床医学]
  • 作者机构:[1]天津医科大学总医院放射科,300052, [2]天津医科大学影像学系, [3]南方医科大学生物医学工程学院
  • 相关基金:国家自然科学基金资助项目(30370434);天津市社会发展科技项目(033111211)
中文摘要:

目的研究不同时间点猴脑缺血半暗带(IP)面积的演变规律。方法成年猴7只,采用自体血栓介入法制作猴大脑中动脉闭塞模型。于导丝到位后1、5、10、15、20、24h分别行CT灌注成像、DWI、PWI和T2WI。取4点ROI,1点为中心区,3点为边缘区,2点为1、3点的中点,4点为邻近的正常信号区。测量脑血流量(CBF)、脑血容量(CBV)、平均通过时间(MTT)、ADC和负性强化积分(NEI),计算时采用与正常对侧的比值(rCBF、rCBV、rMTT、rADC、rNEI)。采用PWI(MTT)-DWI和计算机图像处理软件结合IP阈值两种方法计算IP面积。采用单因素方差分析计算不同时间点缺血灶内不同部位的差异,采用ROC曲线分析不同影像参数的IP阈值及其敏感度和特异度。结果7只猴中5只造模成功。1、2、3点间20h内rCBF、20h内rNEI、15h内rCBV、10h内rADC、24h时rMTT差异有统计学意义(P〈0.05)。1、2、3点ROI值分别为:rCBF:1h(0.160±0.034、0.310±0.037、0.540±0.107),5h(0.098±0.029、0.157±0.052、0.427±0.116),10h(0.072±0.023、0.097±0.028、0.209±0.070),15h(0.054±0.017、0.069±0.015、0.166±0.049),20h(0.038±0.011、0.026±0.007、0.092±0.013);rNEI:1h(0.219±0.085、0.303±0.099、0.463±0.132),5h(0.143±0.057、0.195±0.055、0.348±0.127),10h(0.127±0.029、0.171±0.058、0.259±0.079),15h(0.128±0.024、0.164±0.031、0.217±0.030),20h(0.075±0.019、0.147±0.058、0.129±0.045);rCBV:1h(0.594±0.199、0.804±0.099、1.021±0.169),5h(0.457±0.103、0.462±0.145、0.815±0.201),10h(0.222±0.046、0.249±0.065、0.529±0.135),15h(0.201±0.047、0.187±0.055、0.361±0.083);rADC:1h(0.515±0.115、0.667±0.097、0.761±0.106),5h(0.488±0.100、

英文摘要:

Objective To investigate the evolution of monkey brain ischemic penumbra(IP) area. Methods Seven monkeys were used to make middle cerebral artery occlusion (MCAO) model by interventional methods. CT perfusion imaging, MR diffusion weighted-imaging ( DWI), perfusion weightedimaging(PWI) and T2WI were performed at 1, 5, 10, 15, 20 and 24 h after MCAO respectively. Four regions of interest of infarct lesion were measured. Point 1 was atthe infarct core, point 3 was at the infarct margin, and point 2 was at the midpoint between point 1 and 3. Point 4 demonstrated normal signal intensity adjacent to high signal intensity. Parameters measured included cerebral blood flow (CBF), cerebral blood volume (CBV), mean transit time (MTT), apparent diffusion coefficient (ADC) and negative enhancement integral (NEI). The relative ratios between infarct lesions and the corresponding contralateral normal brain were calculated(rCBF, rCBV, rMTT, rADC and rNEI). The IP areas were calculated by two methods: IP thresholds combined with self-made computer software, and PWI( MTT)-DWI mismatch. ANOVA and ROC analysis were used. Results Five of 7 monkey MCAO models were made successfully. There were significantly difference of rCBF and rNEI within 20 h, of rCBV within 15 h, of rADC within 10 h, of rMTT at24 h (P〈0.05). ROI 1,2 and 3 values as following:rCBF: 1 h(0. 160 ±0.034, 0.310 ±0.037, 0. 540 ±0. 107), 5 h(0. 098 ±0. 029, 0. 157 ±0. 052, 0. 427 ±0. 116), 10 h(0. 072 ±0. 023, 0. 097 ± 0.028, 0.209 ±0.070), 15 h(0.054 ±0.017, 0.069 ±0.015, 0. 166 ±0.049), 20 h(0.038±0.011, 0.026±0.007, 0.092±0.013); rNEI: 1 h(0.219 ±0.085, 0.303±0.099, 0.463±0.132), 5 h (0.143±0.057, 0.195 ±0.055, 0.348 ±0.127), 10 h(0. 127 ±0.029, 0.171 ±0.058, 0.259 ± 0.079), 15 h(0. 128±0.024, 0. 164 ±0. 031, 0.217 ±0. 030), 20 h(0. 075 ±0.019, 0. 147 ±0. 058, 0. 129±0.045); rCBV: 1 h(0.594 ±0. 199, 0.804 ±0.099, 1.021 ±0. 169), 5 h

同期刊论文项目
同项目期刊论文
期刊信息
  • 《中华放射学杂志》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中华医学会
  • 主编:
  • 地址:北京市东四西大街42号
  • 邮编:100710
  • 邮箱:cjr@cma.org.cn
  • 电话:010-85158384
  • 国际标准刊号:ISSN:1005-1201
  • 国内统一刊号:ISSN:11-2149/R
  • 邮发代号:2-66
  • 获奖情况:
  • 中华医学会2001年优秀期刊一等奖,1992年中国科协新闻出版署优秀学术期刊三等奖,199...,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),波兰哥白尼索引,荷兰文摘与引文数据库,荷兰医学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:64918