血液动力学响应同时发生的间接性形放电和高频振荡局部化了发作区域
William Wilson1,2, Daniel J Pittman1,2, Perry Dykens1,2
1Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Epilepsia
|August 5, 2024
概括
与间歇性形放电 (IED) 同时发生的高频振荡 (HFO) 提供了更清晰的功能磁共振成像 (fMRI) 激活图. 这种方法增强了使用内电脑图 (EEG) 来识别产生的脑组织.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 发病学 (Epileptology) 是一个专业的学科.
背景情况:
- 高频振荡 (HFO) 是发性组织的生物标志物.
- 功能磁共振成像 (fMRI) 以血动力学方式测量大脑活动.
- 同时电脑电图 (EEG) -fMRI对于定位发作发作区域至关重要.
研究的目的:
- 用内EEG来描述与HFO相关的fMRI激活图.
- 为了确定这些fMRI地图与HFO和发作组织的距离.
- 为了研究间接性型排泄物 (IED) 对与HFO相关的fMRI的影响.
主要方法:
- 同时对45名患者进行了内EEG-fMRI.
- 通过算法检测HFO,并通过视觉确认.
- 针对带有IED和没有IED的HFO生成了fMRI激活地图,并测量了到发作区域的距离.
主要成果:
- 与IED同时出现的HFO产生了更接近EEG相关的fMRI集群.
- 使用IED的HFO在最大激活集群中显示出更高的z-score和更大的体积.
- 与没有IED的HFO相比,带有IED的HFO产生了更离散的fMRI激活地图.
结论:
- 内EEG-fMRI有效地探测了对HFO的血液动力学反应.
- 与IED相关的HFO产生了fMRI激活模式,可以更好地划分组织.
- 这种方法可以更好地识别产生的地区.
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