在临床样本中的MRI白质过强度和神经心理性能
Jory Paredes1, Michael Daniel1
1Pacific University, College of Health Professions, School of Graduate Psychology, Hillsboro, OR, USA.
Applied neuropsychology. Adult
|November 11, 2023
概括
常规MRI上的白质过强度 (WMH) 与非痴呆症门诊患者的轻度注意力和处理速度缺陷有关. 这些发现表明,即使没有痴呆症,WMH也可能微妙地影响认知功能.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 认知神经科学 认知神经科学
背景情况:
- 白物质超强度 (WMH) 经常在没有痴呆症的个体的神经成像中观察到.
- 现有的关于WMH与这一群体认知表现之间的关联的研究产生了混合的结果.
研究的目的:
- 为了研究常规临床MRI检测到的白质过强度和神经心理测试性能之间的关系.
- 评估WMH和没有WMH的非痴呆症门诊患者的认知功能.
主要方法:
- 根据MRI发现,选择了两组非痴呆的门诊患者:一个正常组 (n=62) 和一个WMH组 (n=56).
- 神经心理测试评估了五个认知领域,得分分类为临床范围.
- 使用统计分析,包括概率比率和赔率比率,来比较不同组的认知表现.
主要成果:
- 在注意力/处理速度的基准率中发现了显著的差异,更多的WMH患者落入了低于平均水平的范围.
- 患有WMH的患者在注意力/处理速度和推理的执行功能测试中显著更有可能呈现较低的分数 (z-score ≤-1.00).
- 在任何认知领域中,对于更严重的认知衰退 (z-score ≤-1.67) 没有发现显著差异.
结论:
- 在常规的临床MRI中,白质过强度与未患有痴呆症的转诊门诊患者的注意力和处理速度轻微下降有关.
- 这些发现凸显了WMH对非痴呆人口认知功能的微妙影响.
相关概念视频
01:24Magnetic Resonance Imaging
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...
01:21Imaging Studies for Cardiovascular System IV: CMRI
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,...