在SPRINT-MS临床试验中的扩散张力成像:先进的试验方法
Ken Sakaie1, Mengke Du, Nancy Obuchowski2
1Diagnostics Institute Cleveland Clinic, Cleveland, OH, USA.
概括
对SPRINT-MS试验的扩散张力成像 (DTI) 分析显示,带膜和小脑的辐射扩散性可以检测治疗效应. 这些DTI指标显示神经保护试验在渐进的多发性硬化症中具有前景.
科学领域:
- 神经成像
- 放射学
- 神经学
背景情况:
- SPRINT- MS 是一项2期临床试验,研究易布迪拉斯的进展性多发性硬化症 (MS).
- 在试验中使用多模式成像,包括扩散张力成像 (DTI) 来评估大脑组织完整性.
- 这项研究改进了DTI分析方法,以便在MS临床试验中得到更广泛的应用.
研究的目的:
- 重新评估SPRINT-MS试验中的扩散张力成像 (DTI) 数据.
- 评估特定的DTI指标在渐进性多发性硬化症临床试验中的效用.
主要方法:
- 对DTI数据的高级后处理包括对运动和扭曲的纠正.
- 分析了有趣的白质区域,包括带膜和小脑.
- 使用线性混合效应模型与霍姆校正分析的中位射扩散率是主要结果.
主要成果:
- 在皮带和小脑中,在ibudilast和安慰剂组之间观察到辐射扩散率的显著差异.
- 治疗组的放射性扩散变化表明组织保存,而安慰剂组的情况恶化.
- 观察到的变化具有统计学意义 (p < 0. 04).
结论:
- 扩散张力成像 (DTI) 度量,特别是带膜和小脑的辐射扩散度,显示出潜在的结果.
- 这些DTI发现表明,在进行神经保护性多发性硬化症的临床试验中,对治疗疗效的评估有作用.
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