一个新的早期成像生物标志物用于淋巴功能:大脑皮层动脉脉动率指数从2分钟相位对比MRI
Sung-Hye You1, Byungjun Kim1, Moonjung Hwang1
1Department of Radiology, Anam Hospital, Korea University College of Medicine, 73, Goryeodae-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
The journal of prevention of Alzheimer's disease
|August 15, 2025
概括
在阿尔茨海默病 (AD) 患者中,半腹中心皮层动脉的脉动性指数 (PICSO) 升高,这表明它有可能成为AD和淋巴功能障碍的新型成像生物标志物.
科学领域:
- 神经成像是一种神经成像.
- 大脑血管功能的功能
- 阿尔茨海默病的研究研究.
背景情况:
- 动脉脉动性是淋巴流的关键驱动因素,对大脑废物清理至关重要.
- 阿尔茨海默病 (AD) 与淋巴功能受损有关.
- 对于早期的AD检测和监测,需要新的非侵入性生物标志物.
研究的目的:
- 评估半圆中心皮层动脉的脉动性指数 (PICSO) 作为潜在的AD的非侵入性成像生物标志物.
- 调查PICSO,淋巴功能和AD严重程度之间的关系.
主要方法:
- 一项涉及160名参与者的回顾性横截面研究 (健康志愿者,认知正常的对照,AD患者).
- 使用3.0 T MRI与2D相对比成像来测量PICSO.
- 通过在周周血管空间 (DTI-ALPS) 沿线的扩散张力图像分析指数评估淋巴功能.
主要成果:
- 与健康和认知正常组相比,AD患者的PICSO显著更高 (P<0.001).
- 在总队列中,PICSO与年龄呈正相关性 (rho=0.613),与DTI-ALPS指数 (rho=-0.439) 和MMSE得分 (rho=-0.486) 呈负相关性.
- 这些发现表明,在阿尔茨海默氏症中,大脑血管脉动性发生变化,与淋巴功能障碍和认知能力下降有关.
结论:
- 来自二维相对比MRI的PICSO显示为阿尔茨海默病的新型成像生物标志物具有前途.
- 这种生物标志物与AD的淋巴功能和认知状态有关.
- 需要进一步的研究来验证PICSO用于AD的临床应用.
相关概念视频
Magnetic Resonance Imaging
6.9K
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...
6.9K
Imaging Studies for Cardiovascular System IV: CMRI
137
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
137


