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早期磁共振成像:多发性硬化症中新出现的偏磁边缘病变的特征
Kelly A Clark1,2, Abby R Manning1,2, Luyun Chen1,2
1Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Annals of neurology
|June 22, 2023
概括
早期的MRI特征可以预测多发性硬化症 (MS) 中的磁性边缘病变 (PRL) 的发展. 识别这些早期指标有助于了解疾病进展,并为MS开发向治疗.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 放射学 放射学是一门学科.
背景情况:
- 多发性硬化症 (MS) 中的偏磁边缘病变 (PRL) 与进展性组织损伤有关.
- 早期识别发展为PRL的病变对于了解MS病理学至关重要.
研究的目的:
- 识别早期磁共振成像 (MRI) 特性,预测在新的多发性硬化症 (MS) 病变中形成磁边缘病变 (PRLs) 的发展.
- 调查最初的损伤特征与随后的PRL状态之间的关系.
主要方法:
- 在MS患者的新增对比增强病变中,在观察后4周内使用7特斯拉 (7T) 核磁共振成像,并在3个月和6个月后进行成像.
- 病变在6个月后被分类为PRL或非PRL.
- 用通用线性混合效应模型和随机森林分类来分析早期病变特征并预测PRL状态.
主要成果:
- 在93个增强对比度的病变中,有37个发展为PRL.
- 变为PRL的病变在7TMRI上显示出明显更高的初始T1值 (1994 ms vs 1670 ms) 和更大的体积 (168.7 mL vs 44 mL),与非PRL病变相比.
- 在体积和强度正常化的T1加权和流体减弱的反转恢复信号中的这些差异在3T扫描上也显著.
- 随机森林分类实现了0.86的接收器操作特征曲线下的面积,用于使用初始的7T特征预测PRL状态.
结论:
- 早期的MRI特征,特别是更高的T1值和更大的体积,可以识别新的MS病变,这些病变将演变为PRLs.
- 这些发现表明,导致PRL发展的生物过程始于病变演变的早期.
- 早期识别PRL前体对临床试验和开发针对MS的向治疗具有重要意义.
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