Trio 3 tesla mr scanner

Utilizing an 8-channel phased-array head coil, we acquired MRI data employing the Trio 3-Tesla MR scanner from Siemens, Germany. Participants were instructed to remain awake but refrain from engaging in any cognitive activities. Head motion was minimized using a foam cushion, and noise interference was mitigated through the use of earplugs. The parameters for obtaining fMRI images are shown in Table 1.

The Trio 3-Tesla MR scanner (Siemens, Munich, Germany) was used. Before scanning, each participant was asked to relax, close their eyes, and minimize movement (29 (link)). To obtain functional data, a 3D metamorphic gradient echo pulse sequence was used. The following parameters were used for a 176-image scan: acquisition matrix 256 × 256; field of view 250 mm × 250 mm; echo time 2.26 ms; repetition time 1,900 ms; thickness 1.0 mm; gap 0.5 mm; flip angle 9°. For a 240-image scan, parameters were as follows: acquisition matrix 64 × 64; field of view 220 mm × 220 mm; thickness 4.0 mm; gap 1.2 mm; repetition time 2,000 ms; echo time 30 ms; flip angle. 90°, 29 axial.

Brain images were acquired on a Siemens Trio 3 Tesla MR scanner (Siemens, Erlangen, Germany) using a 32-channel phased-array head coil. Participants were requested to close their eyes and remain still during the exam, and the head was immobilized with plastic pads. For DTI data, a single-shot echo-planar imaging sequence was used for acquisition. The DTI sequence parameters were as follows: time of repetition (TR) = 3,300 ms, echo time (TE) = 90 ms, matrix size = 128 × 128, slice thickness = 4 mm, field of view (FOV) = 230 × 230 mm, space resolution = 1.8 × 1.8 × 1.8 mm³, number of excitations = 3, and total acquisition time = 3.39 min. Further, 20 non-collinear diffusion sensitizing gradient directions (b = 1,000 s/mm², and 1b = 0 s/mm²) were applied. Axial T1-weighted images (T1WI) in the 3D-Magnetization-Prepared Rapid Acquisition Gradient-Echo (MPRAGE) sequence with TR = 250 ms and TE = 2.46 ms were obtained: TI = 900 ms, filed of view = 250 × 250 mm, acquisition matrix = 256 × 246, number of slices = 176, slice thickness = 1 mm, flip angle = 9°, and voxel size = 1 × 0.977 × 0.977 mm³. The mean scan duration was 4 min 18 s.

Whole-brain imaging data was collected on a Siemens TRIO 3-Tesla MR scanner in the National Key Laboratory of Cognitive Neuroscience and Learning at Beijing Normal University. Functional images were collected using an echo-planar imaging sequence (axial slices, 33; slice thickness, 4 mm; gap, 0.6 mm; TR, 2000, ms; TE, 30 ms; flip angle, 90°; voxel size, 3.1 × 3.1 × 4.0 mm; flip angle, 90°; FOV, 200 × 200 mm; and 580 volumes), while structural images were acquired through three-dimensional sagittal T1-weighted magnetization-prepared rapid gradient echo (192 slices; TR, 2530, ms; TE, 3.45 ms; slice thickness, 1 mm; voxel size, 1.0 × 1.0 × 1.0 mm³; flip angle, 7°; inversion time, 1100, ms; FOV, 256 × 256 mm).