An MRI scan of the head was performed. In order: axial T2-weighted, axial T2-weighted fluid-attenuated inversion-recovery (FLAIR), axial T1-weighted postcontrast, coronal T1-weighted postcontrast, axial diffusion-weighted (DWI), and axial apparent diffusion coefficient (ADC) images of the brain...
In order: axial T2-weighted, axial T2-weighted fluid-attenuated inversion-recovery (FLAIR), axial T1-weighted postcontrast, coronal T1-weighted postcontrast, axial diffusion-weighted (DWI), and axial apparent diffusion coefficient (ADC) images of the brain. 行颅脑MRI扫描,图像按顺序分别为:轴位T2WI...
Initially, from the middle slice of the whole volume, the brain portion is segmented and using this as a reference, brain portion in the remaining slices are extracted. Experiments using the proposed method on two T2 weighted data set show that the proposed method gives satisfactory results.K....
接下来需要确定x和y,分别对应特定的频率和特定的相位: MRI图片来自知识共享许可:https://commons.wikimedia.org/wiki/File:MRI_T2_Brain_axial_image.jpg 接下对于y轴的位置确定则采用相位编码(Phase encoding)。相位编码梯度在切片梯度选定且自选系统被激发后采用,这种梯度改变了Y方向上的相位,使得不同的Y坐标具有...
Figure 2a.Increasing the parallel imaging acceleration factor(R)leads to reduced acquisition time(TA [minutes:seconds])but decreased SNR in a 19-year-old man. Axial T2-weighted images of the brain acquired with GRAPPA with progressively increasing acceleration factors show that as the acceleration ...
Figure. (A) Gadolinium-enhanced, T1-weighted MRI of the brain (coronal views) shows meningeal enhancement of the left temporal, parietal, and occipital lobes (arrows). ( Gradient recall echo-sequenced MRI of the brain (axial view) shows multiple small hypointense regions consistent with ...
Figure 6,Figure 7, Figure 8,Figure 9: Axial T2 weighted images show bilateral symmetric T2 prolongation involving the corticopontine and corticospinal tracts (white arrows).图6-9:显示双侧皮质桥脑束和皮质脊髓束的对称性T2高信号影. 【影像诊断...
【影像改变】:There is an extra-axial, dural based mass predominantly in the high left posterior parietal region which is relatively isointense signal on TI (yellow arrow in Figure 1) and T2 (yellow arrow in Figure 2) sequences. 图示左侧后顶部...
With voxel-level precision, our method identified which specific areas are being paid attention to, identifying these predominant brain regions: the hippocampus, the amygdala, the parahippocampal, and the inferior lateral ventricles. All these areas are clinically associated with AD development. Further...
As a key oscillatory activity in the brain, thalamic spindle activities are long believed to support memory consolidation. However, their propagation characteristics and causal actions at systems level remain unclear. Using functional MRI (fMRI) and elec