[3] Soni N, et al. Arterial spin labeling perfusion: Prospective MR imaging in differentiating neoplastic from non-neoplastic intra-axial brain lesions. Neuroradiol J 2018;31:544-553. [4] Li R, et al. Differential diagnosis of mitochondrial en...
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 ...
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坐标具有不同的相位差,且这种干涉撤出后,相位差仍然存在。在y...
Figure 1: Axial non contrast CT demonstrates symmetric low attenuation in the temporal-parietal white matter. Note involvement of the splenium of the corpus callosum (red arrows).图1:轴位的平扫CT显示对称性的低密度影在颞枕叶脑白质区,需要注...
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....
healthy control and cerebrovascular disease patients in the axial plane: Examples of input multi-contrast MRI scans, output synthetic PET, reference PET, and corresponding magnified (×3) absolute error maps. PET CBF is quantified in milliliters per 100 g of brain tissue per minute (ml/100 g...
healthy control and cerebrovascular disease patients in the axial plane: Examples of input multi-contrast MRI scans, output synthetic PET, reference PET, and corresponding magnified (×3) absolute error maps. PET CBF is quantified in milliliters per 100 g of brain tissue per minute (ml/100 g...
T2mapping at 7 T MRI without requiring any additional hardware—such as dielectric pads or multi-channel transmit coil—to reduce the RF field inhomogeneity. Another advantage of this method is that it enables whole-brain imaging with high acceleration factors, as it relies on a 3D k-space ...
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...
brain imaging; however, fMRI and structural neuroscience studies are more difficult to conduct at these ultra-high field strengths due to the complexity of imaging with greater RF heating restrictions (specific absorption rate, SAR), B1/B0 magnetic field inhomogeneity and shortened T2* decay. ...