投资回报率引用对定量敏感性映射的统计影响
Patrick S Fuchs1, Oliver C Kiersnowski1,2, Carlos Milovic3
1Department of Medical Physics and Biomedical Engineering, University College London, London, UK.
Magma (New York, N.Y.)
|April 5, 2025
概括
在定量敏感度映射 (QSM) 中选择参考区域会影响临床发现,并可能引入偏差. 仔细的选择至关重要,因为没有一个参考区域是所有研究的最佳选择.
科学领域:
- 医疗成像医学成像
- 神经成像是一种神经成像.
背景情况:
- 定量敏感度映射 (QSM) 重建了磁性敏感度值.
- 在QSM中绝对引用是不可能的,需要使用感兴趣的解剖区域 (ROI) 进行相对引用.
研究的目的:
- 调查引用在QSM中的统计比较的理论基础和影响.
- 评估参考区域选择对临床发现和统计学意义的影响.
主要方法:
- 对临床研究数据集的分析.
- 在体QSM重建挑战数据的评估.
- 调查各种参考区域及其对统计变化的影响.
主要成果:
- 引用显著影响了QSM中临床发现的统计学意义.
- 引用可以改变测试统计的准确性,并可能导致结果偏差.
- 没有单一的"最佳"参考区域存在;选择取决于病理和队列.
结论:
- 在QSM中,仔细考虑参考区域选择是必不可少的,特别是在临床应用中.
- 避免明确引用或"桃挑选"参考区域,可以降低错误阳性的风险.
- 建议将QSM结果与其参考区域一起发布,以实现数据集的可比性.
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