2023年2月9日 · 弥散张量成像（diffusion tensor imaging，DTI）是一种基于常规磁共振影像技术发展出的新兴影像表达方法。 DTI是MRI的一种特殊形式，不仅可以显示每一个体素的信号强度，而且还能够计算3维空间中张量方向的具体数据。 然后将每一个体素展现出的单个箭头根据神经束方向的差异进行整理，生成一组方向箭头。 再经由图像数据的处理将每一组的方向箭头进行加工，形成神经束的线性图像。 大脑中的白质纤维束呈几何形式排列，由于弥散磁共振成像能够清晰 …

Diffusion-weighted and diffusion tensor imaging (DWI/DTI) has revolutionized clinical neuroimaging. Pathology may be detected earlier and with greater specificity than with conventional magnetic resonance imaging sequences. In addition, DWI/DTI allows exploring the microarchitecture of the brain.

2023年11月12日 · By capturing the direction and magnitude of water diffusion, DTI enables the visualization of neural pathways and connectivity, making it an indispensable tool for understanding brain anatomy, function, and pathology.

DTI is an emerging neuroimaging method for identifying microstructural changes. Various DTI scalars—such as FA, AD, RD, MD, and MO—can be correlated with clinical information in order to reveal abnormalities associated with neurological diseases.

Neuroimaging plays a critical role in the setting in traumatic brain injury (TBI). Diffusion tensor imaging (DTI) is an advanced magnetic resonance imaging technique that is capable of providing rich information on the brain’s neuroanatomic ...

2024年7月9日 · Diffusion tensor imaging (DTI) is an MRI technique that uses anisotropic diffusion to estimate the axonal (white matter) organization of the brain. Fiber tractography (FT) is a 3D reconstruction technique to assess neural tracts using data collected by diffusion tensor imaging.

2023年8月10日 · Findings seen on diffusion tensor imaging (DTI) include increased diffusivity and decreased anisotropy caused by loss of structural organization and expansion of the...

2014年7月1日 · A conventional DWI sequence evaluates diffusion in all directions. In contradistinction, diffusion tensor imaging (DTI) evaluates diffusion in multiple different directions (represented by vectors with magnitude and direction) to investigate the three-dimensional microanatomical structure of brain parenchyma.

Diffusion tensor imaging (DTI) is an MRI sequence used to non-invasively investigate white matter (WM) changes on a microstructural level. DTI utilizes the water diffusivity patterns through WM tracts to determine their organization and structural integrity (Basser & Pierpaoli, 2011). The rate of water diffusion in an area will affect the image ...

Diffusion tensor imaging (DTI) is one of several diffusion MRI-based techniques that can be used to noninvasively, indirectly assess tissue macro- and microstructure. DTI can be used as a visualization tool to distinguish between large oriented macromolecular structures, such as white matter fiber bundles in the brain.