在内血管壁MRI中增强斑块对比度的Voxel-Wise量化和多平面可视化
Yin Guo1, Maoxue Wang2,3, Beibei Sun2,4
1Department of Bioengineering, University of Washington, Seattle, WA, USA.
medRxiv : the preprint server for health sciences
|November 24, 2025
概括
一种新的半自动化方法准确量化了内动脉样硬化斑块中的对比度增强 (CE). 这种技术改善了对缺血性中风患者的斑块脆弱性评估.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 生物标志物 生物标志物
背景情况:
- 内动脉样硬化斑块的对比增强 (CE) 是识别缺血性中风罪祸首病变的关键生物标志物.
- 目前的评估方法依赖于定性分析,易受人工制造物的影响.
研究的目的:
- 开发和验证用于可视化和量化CE强度和体积的半自动化方法.
- 评估开发方法的准确性和扫描-重新扫描可重复性.
主要方法:
- 使用多对比预处理,规范化,文物调整和信号强度值创建了一个3D定量CE地图.
- 对从内动脉样硬化疾病患者获得的3.0 T MRI数据的回顾性分析.
- 对专家审查的验证和扫描-重新扫描可复制性的评估.
主要成果:
- 确定了最佳的CE值,实现了CE检测曲线下的面积为0.91 (灵敏度为0.83,特异性为0.90).
- CE体积测量与专家评估有很强的相关性 (斯皮尔曼的rho=0.82,p<0.001).
- 对增强比率 (ICC=0.92) 和CE检测一致性 (kappa=0.82) 观察到高可重现性.
结论:
- 开发的CE地图提供了在内动脉样硬化斑块中的CE的准确和可重复量化.
- 这种方法可以全面评估斑块脆弱性,有助于治疗缺血性中风.
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