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Magnetic Resonance Imaging technology—bridging the gap between noninvasive human imaging and optical microscopy

机译:磁共振成像技术 - 桥接非侵入人体成像与光学显微镜之间的差距

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摘要

Technological advances in Magnetic Resonance Imaging (MRI) have provided substantial gains in the sensitivity and specificity of functional neuroimaging. Mounting evidence demonstrates that the hemodynamic changes utilized in functional MRI can be far more spatially and thus neuronally specific than previously believed. This has motivated a push toward novel, high-resolution MR imaging strategies that can match this biological resolution limit while recording from the entire human brain. Although sensitivity increases are a necessary component, new MR encoding technologies are required to convert improved sensitivity into higher resolution. These new sampling strategies improve image acquisition efficiency and enable increased image encoding in the time-frame needed to follow hemodynamic changes associated with brain activation.
机译:磁共振成像(MRI)的技术进步在功能性神经模仿的敏感性和特异性方面提供了大量的增益。 安装证据表明,功能MRI中使用的血流动力学变化可以更加空间,从而比以前认为是神经元特异性的。 这有动力推动新颖的,高分辨率的MR成像策略,这些策略可以与整个人类大脑记录时匹配这种生物分辨率限制。 虽然灵敏度增加是必要的组件,但是新的编码技术需要将改善的敏感性转换为更高分辨率。 这些新的采样策略改善了图像采集效率,并使所需的时间帧中的图像编码增加,以遵循与大脑激活相关的血液动力学变化所需的时间框架。

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