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不同年龄段的电场模拟的可靠性:数据质量指标的影响
Dayana Hayek1, Axel Thielscher2,3, Ulrike Grittner4
1Department of Neurology, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475, Greifswald, Germany. dayana.hayek@med.uni-greifswald.de.
磁共振成像 (MRI) 质量影响大脑刺激模拟. 尽管老年人图像质量较差,但电场模拟仍然可靠,用于跨年龄组个性化非侵入性脑刺激 (NIBS) 剂量.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 计算建模 计算建模
背景情况:
- 个性化非侵入性脑刺激 (NIBS) 依赖于MRI数据的精确电场模拟.
- 老年人结构性MRI质量较低可能会损害模拟准确性和个性化剂量.
- 标准化的图像质量指标对于评估模拟可靠性至关重要.
研究的目的:
- 研究MRI图像质量指标与年轻人和老年人模拟电场大小之间的关系.
- 为了确定图像质量是否介导与年龄相关的差异在电场模拟中.
- 评估电场模拟对个性化NIBS整个寿命的可靠性.
主要方法:
- 分析了106名健康成年人 (47名年轻人,59名老年人) 的MRI和电场模拟数据.
- 通过MRIQC使用EFC,SNR,CNR,FWHM和INU等指标评估图像质量.
- 电场的计算建模使用SimNIBS用于焦点C3组装.
- 结构方程建模分析年龄组,图像质量和电场大小关系.
主要成果:
- MR图像质量与模拟电场大小有显著的相关性 (更高的EFC,更低的SNR/CNR,更高的INU与减少的电场相关).
- 与年轻人相比,老年人通常表现出较低的模拟电场.
- 图像质量解释了一些,但并非所有,与年龄相关的电场强度差异.
结论:
- 图像质量与模拟电场强度有关,影响剂量估计.
- 尽管老年人图像质量较差,但电场模拟显示出足够的可靠性.
- 模拟支持个人化NIBS剂量调整整个寿命,包括老龄化人口.
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