在图像强度正常化后,大脑T1-WMRI的放射性特征的重复性:对结构性神经退行症的纵向研究的影响
Noemi Pisani1, Michela Destito2, Carlo Ricciardi3
1Department of Advanced Biomedical Sciences, University of Naples Federico II, 80131 Naples, Italy.
Computer methods and programs in biomedicine
|April 9, 2025
概括
这项研究使用不同的正常化方法评估了正常大脑MRI扫描中的放射性特征的重复性. 在纵向放射性分析中,Z-score和WhiteStripe正常化显示出可比,可靠的结果.
科学领域:
- 神经成像是一种神经成像.
- 无线电学 (Radiomics) 是一种无线电学.
- 定量核磁共振分析 (MRI) 分析
背景情况:
- 放射学从MRI中提取定量特征,对微妙的软组织病理有价值.
- 在正常的大脑组织中与衰老相关的神经退行可能会影响放射性分析.
- 放射性特征提取的标准化对于可靠的纵向研究至关重要.
研究的目的:
- 在纵向MRI中评估正常大脑组织的放射性特征的重复性.
- 为了比较三种强度正常化技术的性能:Z-score,WhiteStripe和Nyul.
- 为大脑MRI放射学中强度正常化提供准则.
主要方法:
- 分析了59个T1加权的MRI扫描,这些扫描来自六个月内在两个时间点获得的认知完整的患者.
- 从pons区域提取了91个放射性特征,被认为是健康的大脑组织.
- 使用类内相关系数 (ICC) 和一致性相关系数 (CCC) 评估可重复性.
主要成果:
- 通过Z分数的正常化,WhiteStripe (ICC:0.89,CCC:0.80) 的ICC (0.90) 和CCC (0.82) 值得到了可比的结果.
- 无论是Z-score还是WhiteStripe规范化方法,都显示了放射性特征的强大的重复性.
- 尼尔正常化结果没有明确详细说明,但暗示不太一致或可比.
结论:
- 强度正常化对于大脑可重现的纵向放射性研究至关重要.
- Z-score和WhiteStripe正常化是大脑MRI放射学的可靠方法.
- 这些发现为在放射性研究中标准化MRI预处理提供了实际指导.
更多相关视频
05:14Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
Published on: September 8, 2021
3.1K
12:50Lesion Explorer: A Video-guided, Standardized Protocol for Accurate and Reliable MRI-derived Volumetrics in Alzheimer's Disease and Normal Elderly
Published on: April 14, 2014
39.7K
相关概念视频
Magnetic Resonance Imaging
4.8K
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...
4.8K
Brain Imaging
197
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
197
