沿脑周血管空间进行MR扩散张力成像测量的可靠性和空间一致性
Enchao Qiu1, Joga Chaganti2, Phillip Phan1
1Jefferson Headache Center, Department of Neurology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
概括
在周围血管空间 (DTI-ALPS) 进行扩散张力成像分析的可靠性因兴趣区域的位置而异. 标准化方法对于在临床环境中进行一致的DTI-ALPS测量至关重要.
科学领域:
- 神经成像
- 生物医学工程
- 放射学
背景情况:
- 在周围血管空间进行扩散张力成像分析 (DTI-ALPS) 评估淋巴系统功能.
- DTI-ALPS的可靠性受到兴趣地区 (ROI) 选择方法的影响.
- 对于临床DTI-ALPS应用来说,研究ROI配置的一致性至关重要.
研究的目的:
- 使用本地空间ROI评估DTI-ALPS测量的可靠性.
- 从本地与标准化的蒙特利尔神经研究所 (MNI) 空间ROI获得的DTI-ALPS指数进行比较.
- 确定ROI选择对DTI-ALPS数据的一致性的影响.
主要方法:
- 在两个半球的16名健康人群中计算DTI-ALPS指数.
- 使用手动放置的本地空间ROI和标准化的MNI空间ROI.
- 通过使用Dice相似系数,评估了与类内相关系数 (ICC) 之间的可靠性,并评估了ROI重叠.
主要成果:
- 左侧DTI-ALPS的可靠性中等 (ICC=0.599),右侧的可靠性很好 (ICC=0.807).
- 神经辐射学家之间的空间重叠 (迪斯系数0.047-0.312) 很差.
- 在本地和MNI空间测量之间的左侧DTI-ALPS显著差异 (p=0.002).
结论:
- 本地空间ROI显示了DTI-ALPS的可变互评值可靠性.
- 标准化 ROI 选择对于可重复的 DTI-ALPS 结果至关重要.
- 一致的ROI方法对于DTI-ALPS的临床转化至关重要.
相关概念视频
01:24Magnetic Resonance Imaging
6.7K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
6.7K
01:17Assessment of Diffusion and Perfusion
1.1K
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
1.1K