Avehicular ad hoc network (VANET) is a packet-switched network, consisting of mobile communication nodes mounted on vehicles, with very limited or no infrastructure support [1]. It supports communications among near...Avehicular ad hoc network (VANET) is a packet-switched network, consisting of mobile communication nodes mounted on vehicles, with very limited or no infrastructure support [1]. It supports communications among nearby vehicles,展开更多
目的应用磁共振弥散张量成像(DTI)比较首发未服药的焦虑障碍患者和正常被试者的脑白质纤维完整性差异。方法选择符合条件的20例首发未服药焦虑障碍患者为研究组,25名条件匹配的正常健康人为对照组,所有受试者采用1.5 Tesla MRI扫描收集...目的应用磁共振弥散张量成像(DTI)比较首发未服药的焦虑障碍患者和正常被试者的脑白质纤维完整性差异。方法选择符合条件的20例首发未服药焦虑障碍患者为研究组,25名条件匹配的正常健康人为对照组,所有受试者采用1.5 Tesla MRI扫描收集弥散张量成像(DTI)测量兴趣区(ROI)纤维束的部分各向异性(FA)值和表观弥散系数(ADC),并行比较。结果研究组在右侧放射冠的FA值(0.44±0.02)低于正常对照组(0.47±0.02),左侧内囊前肢FA值(0.49±0.08)高于正常对照组(0.46±0.04),右侧前扣带回的ADC值(8.64±0.45)高于正常对照组(8.03±0.34),差异均有统计学意义(P<0.05)。结论焦虑障碍患者存在内囊前后肢、胼胝体膝部和压部、放射冠、前扣带回、背侧丘脑等脑白质丰富区域的白质完整性受损,这些异常可能是焦虑障碍发病的重要病理生理机制。展开更多
文摘Avehicular ad hoc network (VANET) is a packet-switched network, consisting of mobile communication nodes mounted on vehicles, with very limited or no infrastructure support [1]. It supports communications among nearby vehicles,
文摘目的应用磁共振弥散张量成像(DTI)比较首发未服药的焦虑障碍患者和正常被试者的脑白质纤维完整性差异。方法选择符合条件的20例首发未服药焦虑障碍患者为研究组,25名条件匹配的正常健康人为对照组,所有受试者采用1.5 Tesla MRI扫描收集弥散张量成像(DTI)测量兴趣区(ROI)纤维束的部分各向异性(FA)值和表观弥散系数(ADC),并行比较。结果研究组在右侧放射冠的FA值(0.44±0.02)低于正常对照组(0.47±0.02),左侧内囊前肢FA值(0.49±0.08)高于正常对照组(0.46±0.04),右侧前扣带回的ADC值(8.64±0.45)高于正常对照组(8.03±0.34),差异均有统计学意义(P<0.05)。结论焦虑障碍患者存在内囊前后肢、胼胝体膝部和压部、放射冠、前扣带回、背侧丘脑等脑白质丰富区域的白质完整性受损,这些异常可能是焦虑障碍发病的重要病理生理机制。