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基于明显扩散系数值的自动急性缺血性中风病变划分.

Vitus Gosch1, Kersten Villringer1, Ivana Galinovic1

  • 1Center for Stroke Research Berlin, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.

Frontiers in neurology
|August 14, 2023
PubMed
概括

对于急性缺血性中风病变的自动显微扩散系数 (ADC) 值显示了可变的性能. 损伤大小和ADC值影响准确性,表明小损伤的限制.

关键词:
核磁共振成像分析软件急性缺血性中风是急性缺血性中风.表面扩散系数的明显扩散系数自动化损伤划界方式扩散权重成像技术的使用.

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科学领域:

  • 神经成像是一种神经成像.
  • 放射学 放射学是一门学科.
  • 脑卒中医学 脑卒中医学

背景情况:

  • 自动化病变细分在急性缺血性中风MRI分析中至关重要.
  • 表面扩散系数 (ADC) 值是界定扩散加权成像 (DWI) 病变的常用技术.

研究的目的:

  • 评估ADC值对细分DWI病变的基线在急性缺血性中风的性能.
  • 为了确定影响自动ADC值准确性的患者特定因素.

主要方法:

  • 对1000Plus研究 (NCT00715533) 的回顾性分析.
  • 使用固定的ADC值 (≤620 × 10−6 mm2/s) 的自动化细分算法的开发.
  • 与手动细分,ROC分析和多重线性回归进行比较,以评估影响因素.

主要成果:

  • 自动化算法实现了0.43.3的中位数子系数.
  • 损伤体积和损伤内的平均ADC值显著预测了性能 (p < 0.001).
  • 最佳的个体ADC值有所不同,平均病变和对细胞ADC值与表现相关.

结论:

  • 对急性中风病变的ADC值性能取决于患者.
  • 损伤大小和ADC值 (损伤和帕伦基马) 影响自动细分的准确性.
  • 使用ADC值对非常小的病变进行自动划分是不可靠的,因为地图噪声.