伪连续动脉自旋标记成像评估出血型烟雾病患者脑血流动力学研究  

Study of pseudo-continuous arterial spin labeling perfusion MRI on the evaluation of cerebral hemodynamics in patients with hemorrhagic moyamoya disease

作　　者：王宪雯 吴芳[1] 刘玥宏 王二玲 范文涛 张献昌 姚泽山 杨旗 WANG Xianwen;WU Fang;LIU Yuehong;WANG Erling;FAN Wentao;ZHANG Xianchang;YAO Zeshan;YANG Qi(Medical Imaging Department,Xuanwu Hospital,Capital Medical University,Beijing 100053,China;Radiology Department,Beijing Chui Yang Liu Hospital Affiliated to Tsinghua University,Beijing 100022,China;Medical Imaging Department,Beijing Chaoyang Hospital,Capital Medical University,Beijing 100020,China;MR Collaboration,Siemens Healthcare Ltd.,Beijing 100000,China;Anlmage Technology(Beijing)Co.,Ltd.,Beijing 100000,China)

机构地区：[1]首都医科大学附属宣武医院医学影像科,北京100053 [2]清华大学附属北京市垂杨柳医院放射科,北京100022 [3]首都医科大学附属北京朝阳医院医学影像科,北京100020 [4]西门子医疗磁共振科研合作部,北京100000 [5]安影科技(北京)有限公司,北京100000

出　　处：《磁共振成像》2022年第1期6-10,共5页Chinese Journal of Magnetic Resonance Imaging

基　　金：国家重点研发计划(编号:2019YFC0120904);北京市自然科学基金资助项目(编号:7191003)。

摘　　要：目的基于伪连续动脉自旋标记成像(pseudo-continuous arterial spin labeling,pCASL)技术探讨成人烟雾病出血后脑血流动力学改变。材料与方法将首都医科大学附属宣武医院2016年12月至2019年4月收治的32例出血型或缺血型成人烟雾病患者共计38个阳性征象半球作为研究对象,其中出血半球21个、缺血半球17个,均在发病3个月内进行pCASL检查,在半卵圆中心层面及阳性征象层面选取病变周围区域、同侧额叶、颞叶进行感兴趣区测算获得pCASL-脑血流量(cerebral blood flow,CBF)、pCASL-动脉脑血容量(arterial cerebral blood volume,aCBV)、pCASL-动脉通过时间(arterial transit time,ATT)数值,出血组和缺血组组间比较,采用两独立样本t检验和Mann-Whitney U检验。结果(1)出血型大脑半球共计21个,病变周围测算aCBV、ATT及CBF分别为(1.01±0.22)mL/100g、(1.53±0.98)s和(37.88±6.19)mL/(100 g·min),额叶测算aCBV、ATT及CBF分别为(1.23±0.31)mL/100g、(1.55±0.15)s和(47.03±13.78)mL/(100 g·min),颞叶测算aCBV、ATT及CBF分别为(1.28±0.30)mL/100g、(1.54±0.12)s和(51.91±13.96)mL/(100 g·min);缺血型大脑半球共计17个,病变周围测算aCBV、ATT及CBF分别为(1.11±0.24)mL/100g、(1.46±0.35)s和(49.27±14.13)mL/(100 g·min),额叶测算aCBV、ATT及CBF分别为(1.17±0.30)mL/100g、(1.51±0.37)s和(43.17±14.63)mL/(100 g·min),颞叶测算aCBV、ATT及CBF分别为(1.21±0.35)mL/100g、(1.50±0.40)s和(49.25±20.85)mL/(100 g·min)。(2)出血型与缺血型相比,病变周围区CBF值显著减低,差异有统计学意义(P<0.05),aCBV及ATT差异无统计学意义,额叶及颞叶pCASL灌注差异无统计学意义。结论出血型烟雾病患者pCASL上脑灌注较缺血型烟雾病更低,pCASL可以检测成人出血型烟雾病患者的血流衰竭程度,监测周围额颞叶细微的缺血变化,为进一步通过监测血流动力学情况预警再出血发生提供研究基础。Objective:To investigate hemodynamic changes in adult patients with hemorrhagic moyamoya disease based on pseudo-continuous artery spin labeling(pCASL)imaging.Materials and Methods:A total of 32 patients(38 hemispheres)with hemorrhagic or ischemic moyamoya diasease in Xuanwu Hospital were enrolled from December 2016 to April 2019,including 21 hemorrhagic hemispheres and 17 ischemic hemispheres.All patients underwent pCASL exams within 3 months after the onset.Mean perfusion parameters of cerebral blood flow(CBF),pCASL-arterial cerebral blood volume(aCBV)and pCASL-arterial transit time(ATT)derived using pCASL were measured within peripheral region of the lesion,ipsilateral frontal lobe and temporal lobe on the semi-oval layer and positive lesion layer.Inter-group comparison between hemorrhage and infarction was carried out through t-test of two independent samples and Mann-Whitney U test of two independent samples.Results:A total of 21 hemorrhagic hemispheres were involved.In the peripheral region of the lesion,mean aCBV,ATT and CBF values were(1.01±0.22)mL/100g,(1.53±0.98)s and(37.88±6.19)mL/(100 g·min),respectively.In the frontal lobe,mean aCBV,ATT and CBF values were(1.23±0.31)mL/100g,(1.55±0.15)s and(47.03±13.78)mL/(100 g·min),respectively.In the temporal lobe,mean aCBV,ATT and CBF values were(1.28±0.30)mL/100g,(1.54±0.12)s and(51.91±13.96)mL/(100 g·min),respectively.For the 17 ischemic cerebral hemispheres,mean aCBV,ATT and CBF values were(1.11±0.24)mL/100g,(1.46±0.35)s and(49.27±14.13)mL/(100 g·min)in the lesion peripheral region,(1.17±0.30)mL/100g,(1.51±0.37)s and(43.17±14.63)mL/(100 g·min)in the frontal lobe,and(1.21±0.35)mL/100g,(1.50±0.40)s and(49.25±20.85)mL/(100 g·min)in the temporal lobe.Compared with ischemic hemispheres,the hemorrhagic hemispheres showed significantly lower CBF in the peripheral region of the lesion(P<0.05).However,there's no statistical difference between two groups in term of aCBV and ATT.No evident statistical difference was seen in statistics of perfusion

关 键 词：烟雾病 伪连续动脉自旋标记成像技术 出血 血流动力学 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R543.4[医药卫生—诊断学]