All participants lay supine on the bed of a Siemens Skyra 3.0-T MRI scanner with a standard 32-channel head coil to collect the MRI data at the Shanxi Provincial People’s Hospital. T1-weighted anatomical data were acquired by covering the entire brain using the MPRAGE sequence (repetition time/echo time = 2,300/2.95 ms, FA = 9°, data matrix = 225 × 240, 160 slices, slice thickness = 1.2 mm). Functional image was obtained using an EPI sequence (repetition time/echo time = 2,500/3.0 ms, FA = 90°, field of view = 240 × 240 mm, data matrix = 64 × 64, slice thickness = 4 mm, and 32 slices, 212 volumes).
Standard 32 channel head coil
Manufactured by Siemens
Sourced in Germany
The Standard 32-channel head coil is a laboratory equipment designed for magnetic resonance imaging (MRI) applications. It features 32 independent receiver channels to capture high-resolution images of the human head.
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7 protocols using standard 32 channel head coil
1
Brain Imaging in Supine Position
2
Structural and Functional MRI Acquisition
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MRI was performed on a Siemens Verio3T MRI scanner with a standard 32-channel head coil (Germany) at the Department of Radiology, Hainan General Hospital. The participants were instructed to keep eyes open but not to think of anything in particular and keep their head motionless. To exclude gross cerebral pathology, routine structural MRI scans were obtained. Afterwards, spin-echo imaging was employed to collect anatomical images of functional regions in the axial plan parallel to the anterior commissure–posterior commissure (AC–PC) line. Scanning for whole-brain function assessment was performed by T2*-weighted echo-planar imaging (EPI) with blood–oxygen-level-dependent imaging (BOLD) contrast sensitivity [repetition time, 2,000 ms; echo time, 30 ms; field of view (FOV), 240 mm × 240 mm; flip angle, 80°; image matrix, 64 × 64; voxel size, 3.5 mm × 3.5 mm × 3.5 mm; every brain volume comprised 32 axial slices, and individual functional runs had 240 volumes]. High-resolution T1-weighted structural imaging was performed employing a magnetization prepared rapid gradient echo (MPRAGE) sequence (repetition time, 2,300 ms; echo time, 2.9 ms; TI, 900 ms; FOV, 256 mm × 256 mm; flip angle, 9°; in-plane matrix, 256 × 256; slice thickness, 1 mm; no gap; voxel dimension, 1 mm × 1 mm × 1.33 mm).
3
Pursuit Task BOLD fMRI Acquisition
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Imaging was conducted using a 3 T MRI scanner (Magnetom Tim Trio, Siemens, Erlangen, Germany) in the Core Facility Human 3 T MRI of the University of Bonn at the University Hospital of Bonn. During the pursuit task, BOLD fMRI data were acquired with a T2*‐weighted echo‐planar imaging sequence (TR = 2500 ms; TE = 30 ms, matrix size = 96 × 96, number of slices = 37, slice thickness = 3 mm, inter‐slice gap = 0.3 mm, FoV = 192 mm, flip angle = 90°, voxel size = 2 × 2 × 3.3 mm). The standard 32‐channel head coil from Siemens was used for radio frequency reception. Additionally, for each participant, a three‐dimensional T1‐weighted high‐resolution structural scan was acquired using Magnetization Prepared Rapid Acquisition with Gradient Echoes (MPRAGE) with the following parameters: TR = 1660 ms, TE = 2.54 ms, matrix size = 320 × 320, number of slices = 208, slice thickness = 0.8 mm, no interslice gap, FoV = 256 mm, flip angle = 9°, and voxel size = 0.8 × 0.8 × 0.8 mm.
4
High-Resolution Neuroimaging of Emotion
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Scanning was done with a Siemens Tim Trio 3 tesla scanner (Siemens, Erlangen, Germany) with a standard 32 channel head coil at the Dahlem Institute for Neuroimaging of Emotion (D.I.N.E.) in Berlin. The parameters of the standard EPI sequence were TR = 2000 ms, TE = 30 ms, flip angle = 70°, 37 axial slices oriented along the AC-PC plane, interleaved from bottom to top, 3 mm slices, no gap, 3 mm × 3 mm, in-plane. A high resolution T1-weighted image for anatomical localization was collected and fMRI localized shimming reduced susceptibility artefacts.
5
3T MRI Acquisition for Neuroimaging Research
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All MRI data were acquired using a 3T MR scanner (MAGNETOM Skyra CONNECTOM, Siemens Healthcare) customized with a 100mT/m gradient coil, inner bore diameter of 56 cm, and a standard 32channel head coil at Washington University in St. Louis, MO, USA.
The 3D T1-weighted Magnetization-Prepared Rapid Acquisition with Gradient Echo (MPRAGE) sequence was performed using the following parameters: sagittal acquisition with repetition time, 2400 ms; echo time, 2.14 ms; eld of view, 224 × 224 × 180 mm; voxel size, 0.7 × 0.7 × 0.7 mm 3 ; inversion time, 1000 ms; band width, 210 Hz/pixel; ip angle, 8°; GeneRalized Autocalibrating Partial Parallel Acquisition (GRAPPA) factor, 2; and total acquisition time, 7 min 40s.
The 3D T2-weighted Sampling Perfection with Application-optimized Contrasts using different ip angle Evolution (SPACE) sequence was performed using the following parameters: sagittal acquisition with repetition time, 3200 ms; echo time, 565 ms; echo spacing, 3.53 ms; turbo factor, 314; echo train duration , 1105 ms; eld of view, 224 × 224 × 180 mm; voxel size = 0.7 × 0.7 × 0.7 mm 3 ; band width, 744 Hz/pixel; variable ip angle; GRAPPA factor, 2; and total acquisition time, 8 min 24s.
More details on the imaging protocols are described in the WU-Minn Human Connectome Project S1200 Release Reference Manual 15 (link)
The 3D T1-weighted Magnetization-Prepared Rapid Acquisition with Gradient Echo (MPRAGE) sequence was performed using the following parameters: sagittal acquisition with repetition time, 2400 ms; echo time, 2.14 ms; eld of view, 224 × 224 × 180 mm; voxel size, 0.7 × 0.7 × 0.7 mm 3 ; inversion time, 1000 ms; band width, 210 Hz/pixel; ip angle, 8°; GeneRalized Autocalibrating Partial Parallel Acquisition (GRAPPA) factor, 2; and total acquisition time, 7 min 40s.
The 3D T2-weighted Sampling Perfection with Application-optimized Contrasts using different ip angle Evolution (SPACE) sequence was performed using the following parameters: sagittal acquisition with repetition time, 3200 ms; echo time, 565 ms; echo spacing, 3.53 ms; turbo factor, 314; echo train duration , 1105 ms; eld of view, 224 × 224 × 180 mm; voxel size = 0.7 × 0.7 × 0.7 mm 3 ; band width, 744 Hz/pixel; variable ip angle; GRAPPA factor, 2; and total acquisition time, 8 min 24s.
More details on the imaging protocols are described in the WU-Minn Human Connectome Project S1200 Release Reference Manual 15 (link)
6
Structural and Diffusion MRI Acquisition
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A Siemens 3T Magnetom Trio Tim MRI scanner (Siemens, Erlangen, Germany) with an 32-channel standard head coil was used for image acquisition.
High resolution T1-weighted structural images were acquired using a three-dimension magnetization prepared rapid gradient-echo [MPRAGE; repetition time (TR) = 1550 ms, echo time (TE) = 2.39 ms, 0.9 × 0.9 × 0.9 mm3 voxel size, field of view 192 × 192 mm2, 176 sagittal slices, acquisition time of 5 min and 56 s] for anatomical detail, echo planar imaging (EPI) correction and co-registration during the diffusion MRI image processing.
Three sets of diffusion-weighted images (single-shot spin-echo) were acquired with slice thickness = 2.0 mm, TR = 7700 ms, TE = 83 ms, number of sagittal slices = 60, voxel size = 2.0 × 2.0 × 2.0 mm3 and acquisition time of 6 min and 23 s. Implemented b values were 0, and 850 s/mm2, applied in 12 uniformly distributed directions. Each set contained 12 volumes and one reference image, providing a total of 39 volumes.
High resolution T1-weighted structural images were acquired using a three-dimension magnetization prepared rapid gradient-echo [MPRAGE; repetition time (TR) = 1550 ms, echo time (TE) = 2.39 ms, 0.9 × 0.9 × 0.9 mm3 voxel size, field of view 192 × 192 mm2, 176 sagittal slices, acquisition time of 5 min and 56 s] for anatomical detail, echo planar imaging (EPI) correction and co-registration during the diffusion MRI image processing.
Three sets of diffusion-weighted images (single-shot spin-echo) were acquired with slice thickness = 2.0 mm, TR = 7700 ms, TE = 83 ms, number of sagittal slices = 60, voxel size = 2.0 × 2.0 × 2.0 mm3 and acquisition time of 6 min and 23 s. Implemented b values were 0, and 850 s/mm2, applied in 12 uniformly distributed directions. Each set contained 12 volumes and one reference image, providing a total of 39 volumes.
7
Diffusion Kurtosis Imaging in Moyamoya Disease
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A Siemens 3.0-Tesla Skyra magnetic resonance imaging scanner (Siemens AG, Erlangen, Germany) with a 32-channel standard head coil was used to acquire images. All volunteers and patients with MMD underwent whole-brain DKI, which was performed using an axial echo-planar imaging sequence with the following parameters: repetition time (TR), 5,600 ms; echo time (TE), 92 ms; field of view (FOV), 228 × 228 mm2; matrix, 76 × 76; slice thickness, 3 mm; number of slices, 33; and b value = 0, 1,000, and 2,000 s/mm2; the diffusion sensitive gradient field was applied in 30 directions.
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