在静止状态下不对称静脉排水的相关值功能磁共振成像数据
Nastaran Schwarz1, Benedikt Sundermann2, Christian Mathys3
1Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus Oldenburg, Universitätsmedizin Oldenburg, Oldenburg, Germany.
Brain research
|June 20, 2025
概括
横 sinus 的不对称性可能会影响功能磁共振成像 (fMRI) 的结果. 这项研究发现,静脉排水模式,而不仅仅是局部血管系统,可以影响fMRI信号波动,可能会混研究结果.
科学领域:
- 神经成像是一种神经成像.
- 放射学 放射学是一门学科.
- 人体生理学 人体生理学
背景情况:
- 功能磁共振成像 (fMRI) 通过大脑血流间接测量神经活动.
- 大脑血管结构的变化可能会在fMRI解释中引入偏差.
- 横 sinus (TS) 非对称性是一种常见的解剖变异.
研究的目的:
- 为了研究横侧腔异对称性和功能磁共振成像 (fMRI) 数据时间过程对称性之间的联系.
- 为了确定静脉排水的解剖学变化是否会影响静止状态fMRI指标.
主要方法:
- 重新分析了来自135名健康受试者的休息状态fMRI数据集.
- 计算voxel-mirrored同型连接 (VMHC) 来评估fMRI信号对称性.
- 从结构性MRI数据测量横 sinus (TS) 截面面积.
主要成果:
- 在靠近横鼻腔的大脑区域中,没有发现VMHC和TS不对称性之间的显著关联.
- 探索性全脑分析显示,在更遥远的大脑区域,VMHC和TS不对称性之间存在显著的负相关性.
- 在全脑分析中,低于值的效应表明了与静脉排水有关的模式.
结论:
- 不对称的静脉排水,反映在TS不对称性,可以解释静止状态fMRI信号波动的差异.
- fMRI发现可能会被内静脉系统的正常变化所混.
- 对静脉解剖学的认识对于准确的fMRI解释至关重要.
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