在全脑辐射的情况下,对间歇性流体动力学的变化进行评估,采用透加权图像分析,沿着周围脉空间方法进行分析
Toshiaki Taoka1,2, Rintaro Ito1,2, Rei Nakamichi2
1Department of Innovative Biomedical Visualization (iBMV), Nagoya University, Nagoya, Japan.
NMR in biomedicine
|September 7, 2023
概括
全脑放射疗法改变了间歇性流体动力学,如治疗后患者的ALPS指数较低所示. 这种沿着周血管空间方法进行的扩散加权图像分析揭示了显著的变化,特别是在老年人群中.
科学领域:
- 神经成像是一种神经成像.
- 放射治疗研究 放射治疗研究
- 流体动力学 流体动力学
背景情况:
- 全脑放射疗法 (WBRT) 是对脑瘤的常见治疗方法.
- 潜在的WBRT副作用包括认知障碍,可能与大脑流体动态的变化有关.
- 非侵入性地评估这些变化对于理解治疗效果至关重要.
研究的目的:
- 用一种新的成像技术评估WBRT后间歇性流体动力学的变化.
- 为了比较接受WBRT和健康对照组的患者之间的间歇性流体动力学.
- 为了研究WBRT剂量,白质超强度和间歇性流体动力学之间的相关性.
主要方法:
- 沿周血管空间 (DWI-ALPS) 方法利用扩散加权图像分析,这是DTI-ALPS的变体.
- 对47名WBRT后患者的图像集和105个对照图像集进行了回顾性分析.
- 计算了ALPS指数以量化间歇性流体动力学,比较组并与临床数据相关 (BED,白质超强度).
主要成果:
- 与对照组相比,ALPS指数在WBRT组 (1.32 ± 0.16) 中明显较低 (1.44 ± 0.17) (p < 0.001).与对照组相比,ALPS指数显著较低 (1.32 ± 0.16).
- 在特定的年龄组中观察到显著的差异 (40-59岁:p < 0.01;60-84岁:p < 0.001).
- 发现ALPS指数与白质过强度 (周腹腔:r = -0.46;深层:r = -0.38) 之间存在显著的负相关性,与BEDs之间存在弱负相关性 (r = -0.19).
结论:
- DWI-ALPS方法表明WBRT后间歇性流体动力学发生了变化.
- 这些变化在老年患者中更为明显,并且与白质变化相关.
- 需要进一步的前性研究来将这些发现与认知症状联系起来.
相关概念视频
Assessment of Diffusion and Perfusion
1.0K
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...
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...
1.0K
Magnetic Resonance Imaging
5.2K
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...
5.2K


