3D T1-weighted Siemens 3D Magnetization prepared rapid gradient echo (MPRAGE) sequence (TR/TE/TI = 2300/3.14/945 ms, flip angle 9°, 0.8 mm isotropic resolution, 2x GRAPPA acceleration, fat suppression OFF) 3D T2-FLAIR Siemens sagittal 3D T2-FLAIR sequence (TR/TE/TI = 4800/441/1650 ms...
Toward the goal of reaching higher spatial resolution MRI for neuroscience, we designed and developed a next-generation (NexGen) 7 Tesla (7 T) human brain scanner to perform a wide range of MRI image acquisition techniques used in neuroscience, including functional, diffusion, physiological an...
duration = 4 min 42 s Sagittal acquisition orientation, one 3D volume with 192 slices, TR = 5000 ms, TE = 395 ms, TI = 1800 ms, FA = variable, pre-scan normalization, echo spacing = 3.36 ms, bandwidth = 781 Hz/pixel, FOV = 250 mm, voxel size = 1 mm isotropic, GRAPPA accelerat...
The PPMI dataset contained 3D sagittal T1 weighted images acquired with the following parameters: TR: 5–11 ms, TE: 2–6 ms, in-plane voxel size: 1 × 1 mm2 and slice thickness 1–1.5 mm. Thirteen subjects from the ADNI dataset were identified with paired T1-weighted volumes from the ...
(MEMPRAGE) sequence56with whole-brain coverage. The imaging parameters are as follows: TR = 2530 ms, TE = 1.15, 3.03, 4.89, 6.75 ms, inversion time (TI) = 1100 ms, flip angle = 7°, 176 contiguous sagittal images, FOV = 220 × 220 mm, ...
A T 1 weighted 3D structural MPRAGE sequence was acquired sagittally with T R / T E / T I = 2400 / 2.14 / 1000 ms . A T 2 weighted 3D structural SPACE sequence was acquired sagittally with T R / T E = 3200 / 565 ms . The voxel resolution of both the T 1 w and the T ...
). First, we predicted the volumetric segmentation three times using different 2D CNN models trained for each respective slicing orientation (axial, sagittal, and coronal). Subsequently, the three volumetric predictions were combined into a single final prediction volume as follows: ...