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...
Whole-brain T1-weighted data were acquired at 0.8 mm isotropic resolution using a 3-dimensional sagittal multi-echo magnetisation-prepared rapid acquisition with gradient echo (ME-MPRAGE) sequence (van der Kouwe et al., 2008) with the following parameters: repetition time = 2,500 ms, echo time...
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 ...
Diffusion MRI data were acquired using a two-dimensional single-refocused diffusion-weighed pulsed-gradient spin-echo echo planar imaging (EPI) sequence50,51with anterior-to- posterior phase-encoding direction. For each participant, 66–70 contiguous sagittal slices were acquired with the center slic...
partial Fourier = 6/8). Both T1w scans were visually inspected to ensure minimal head motion before they were submitted to further processing. qT1 relaxometry data were acquired using a 3D-MP2RAGE sequence (0.8 mm isotropic voxels, 240 sagittal slices, TR = 5000 ms, TE ...
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...
Bottom: (A) sagittal and (B) axial temperature monitoring planes after 6 min of HIFU heating at about 5.5 W/cm2 applied to each of the two transducers (dark spots next to the tips of the white arrows). Temperature increases during sonication are color-encoded as indicated in the legend....