皮质铁积累作为临床认知障碍频谱中神经退行症的成像标记:一个定量敏感性映射研究
Hyeong Woo Kim1, Subin Lee2, Jin Ho Yang1
1Department of Radiology, Konkuk University Medical Center, Seoul, Republic of Korea.
Korean journal of radiology
|October 30, 2023
概括
与正常认知 (NC) 患者相比,在轻度认知障碍 (MCI) 和阿尔茨海默氏症 (AD) 患者中,皮质铁沉积量较高. 在特定的大脑区域的铁积累可能是神经退行症的早期指标.
科学领域:
- 神经成像是一种神经成像.
- 神经退行发生神经退行.
- 生物标志物 生物标志物
背景情况:
- 皮质铁沉积在阿尔茨海默病 (AD) 中越来越多地被认可.
- 了解认知障碍范围内的铁积累对于早期诊断和干预至关重要.
- 定量敏感性测绘 (QSM) 提供了一种测量大脑铁含量的一种方法.
研究的目的:
- 调查皮质灰质铁水平的差异,通过QSM测量,跨正常认知 (NC),轻度认知障碍 (MCI) 和AD痴呆症.
- 探索皮质铁沉积与认知功能之间的关联,特别是迷你精神状态检查 (MMSE) 成绩.
主要方法:
- 对73名NC,158名MCI和48名AD痴呆症参与者的回顾性研究.
- 大脑MRI使用3-T扫描仪上的3D多动态多回声序列.
- 深度神经网络 (QSMnet+) 和FreeSurfer v6.0用于皮层铁量化;ANCOVA和多变量回归用于统计分析.
主要成果:
- 与NC相比,MCI和AD组的皮质敏感性 (铁沉积) 平均值在额叶,叶,额叶,叶,叶和带膜皮层中显著更高.
- 在MCI和AD组合中,带膜和岛膜皮层的敏感性独立预测了MMSE得分,即使经过对共变量进行调整.
- 与NC受试者相比,QSMnet+在AD和MCI患者的皮质中发现了铁沉积的增加.
结论:
- 皮质铁沉积量,通过QSMnet+量化,与正常认知相比,MCI和AD痴呆症患者的皮质铁沉积量较高.
- 环状皮层和岛状皮层的铁沉积可能代表认知障碍和神经退行症的早期成像生物标志物.
- 这些发现强调了QSM作为检测AD和MCI早期病理变化的工具的潜力.
相关概念视频
Alzheimer's Disease: Overview
500
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
500
Brain Imaging
235
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...
235


