Participants were scanned on one of two identical 3 Tesla General Electric MR 750 systems with 50-mT/m gradients and an eight-channel head coil for parallel imaging (General Electric, Waukesha, Wisconsin, USA). For the two consecutive 256-sec resting-state scans (128 functional volumes each), a series of interleaved axial functional slices aligned with the anterior commissure—posterior commissure plane were acquired for whole-brain coverage using an inverse-spiral pulse sequence to reduce susceptibility artifact (TR = 2000 ms; TE = 30 ms; α = 60°; FOV = 240 mm; voxel size = 3.75 × 3.75 × 4 mm; 34 contiguous slices). Four initial radiofrequency excitations were performed and discarded to achieve steady-state equilibrium. Participants were shown a blank gray screen and instructed to lie still with their eyes open, think about nothing in particular, and remain awake.
Eight channel head coil for parallel imaging
Manufactured by GE Healthcare
Sourced in United States
The eight-channel head coil is a laboratory equipment designed for parallel imaging applications. It features eight independent receiver channels that enable simultaneous data acquisition, improving signal-to-noise ratio and reducing acquisition time.
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Lab products found in correlation
3 protocols using eight channel head coil for parallel imaging
1
Resting-State Functional MRI Acquisition
2
High-resolution MRI Brain Imaging Protocol
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Scanning was performed on a 3-T General Electric MR 750 system with gradients of 50 mT/m and an eight-channel head coil for parallel imaging (General Electric, Waukesha, WI, USA). High-resolution images were acquired using a 3D fast SPGR BRAVO pulse sequence: TR, 7.58 ms; TE, 2.936 ms; image matrix, 2562; α = 12°; voxel size, 1 mm × 1 mm × 1 mm; 206 contiguous slices. These structural images were aligned in the near-axial plane defined by the anterior and posterior commissures. Whole-brain functional images were acquired using a spiral-in pulse sequence with sensitivity encoding along the axial plane (TR, 2000 ms; TE, 30 ms; image matrix, 64 × 128; α = 70°; voxel size, 3.8 mm × 3.8 mm × 3.8 mm; 34 contiguous slices).
3
Neuroimaging Protocol for fMRI Analysis
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Scanning was performed on a 3 Tesla General Electric MR 750 system with 50-mT/m gradients and an eight-channel head coil for parallel imaging (General Electric). Structural images were acquired using a 3D fast SPGR BRAVO pulse sequence: repetition time (TR) = 7.58 ms; echo time (TE) = 2.936 ms; image matrix = 2562; α = 12°; voxel size = 1 × 1 × 1 mm; 206 contiguous slices) for coregistration with the functional data. Structural images were aligned in the near-axial plane defined by the anterior and posterior commissures. Whole-brain functional images were acquired using a spiral-in pulse sequence with sensitivity encoding along the axial plane (TR = 2000 ms; TE = 30 ms; image matrix = 64 × 128; α = 70°; voxel size = 3.8 × 3.8 × 3.8 mm; 34 contiguous slices). The first five images of each run were excluded from analyses to ensure the magnet had reached steady state.
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