张量值的扩散MRI检测了艾滋病毒感染的个体与认知障碍的脑微结构异常
Md Nasir Uddin1,2,3, Meera V Singh4,5, Abrar Faiyaz4
1Department of Neurology, University of Rochester, 601 Elmwood Ave, Rochester, NY, 14642, USA. nasir_uddin@urmc.rochester.edu.
Scientific reports
|November 21, 2024
概括
新的MRI技术显示了艾滋病毒感染者 (PWH) 的微妙脑部变化. 张量值的扩散编码在检测艾滋病毒相关的大脑损伤方面比DTI更为敏感,并且与认知功能相关.
科学领域:
- 神经成像是一种神经成像.
- 传染性疾病 传染性疾病
- 神经学 神经学
背景情况:
- 与艾滋病毒相关的神经认知障碍影响约40%的艾滋病毒感染者 (PWH).
- 虽然联合抗逆转录病毒疗法 (cART) 改善了结果,但微妙的,正在进行的大脑微观结构变化可能会持续存在.
- 传统的扩散张力成像 (DTI) 可能无法完全捕捉这些微妙的变化.
研究的目的:
- 为了调查是否张量值的扩散编码指标在检测与艾滋病毒相关的大脑微观结构损伤时比DTI更敏感.
- 评估张量值指标与神经/质损伤 (NFL,GFAP) 和认知表现的血液标志物的关联.
主要方法:
- 在3T进行横截面MRI研究,涉及24名PWH和31名健康对照.
- 使用了张量值的扩散编码和传统的DTI指标.
- 与神经丝光链 (NFL),质纤维酸蛋白 (GFAP) 和认知测试成绩相关的成像指标.
主要成果:
- 张量值的扩散编码指标显示了PWH中白质区域的显著变化.
- 这些指标与认知表现和血液标志物NFL和GFAP有关.
- 艾滋病毒状态和成像指标之间的显著相互作用影响了认知得分,而DTI指标显示的关联比张量值指标弱.
结论:
- 与DTI相比,张量值扩散编码在检测艾滋病毒感染中的微妙轴突损伤方面提供了更高的灵敏度.
- 这些发现突显了先进的扩散核磁共振技术在监测艾滋病毒相关的神经炎症方面的潜力.
- 建议进行纵向研究,以进一步评估张量值扩散指标的响应性.
相关概念视频
01:17Assessment of Diffusion and Perfusion
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 principle...
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 principle...
01:14Brain Imaging
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 Stimulation (TMS).
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 Stimulation (TMS).