All subjects underwent MRI on a Siemens Skyra 3T scanner (Siemens, Erlangen, Germany) with a 32‐channels head coil. The MRI protocol included the following sequences: axial T2‐weighted 3‐dimensional (repetition time [TR]: 8000 ms, echo time [TE]: 95 ms, spatial resolution 0.5 × 0.5 × 3.0 mm3); sagittal T1‐weighted 3‐dimensional magnetization‐prepared rapid gradient echo (TR/TE: 3000/2.47 ms, inversion time: 1000 ms, spatial resolution 0.8 × 0.8 × 0.8 mm3; generalized autocalibrating partially parallel acquisitions with acceleration factor R = 2); twice‐refocused spin echo echo‐planar imaging sequence for diffusion MRI with b values of 1000 and 2000 seconds/mm2 and 30 directions each (repeated for both phase acquisitions), in addition to six b = 0 images (TR/TE: 4700/100 ms, flip angle 80°, spatial resolution 1.8 × 1.8 × 2 mm3).
32 channels head coil
Manufactured by Siemens
Sourced in Germany
The 32-channels head coil is a specialized piece of laboratory equipment used for magnetic resonance imaging (MRI) procedures. It is designed to provide enhanced signal reception and improved signal-to-noise ratio for high-quality brain imaging. The core function of this coil is to facilitate the acquisition of detailed, high-resolution MRI data from the human head and brain.
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Lab products found in correlation
4 protocols using 32 channels head coil
1
Multi-Sequence Neuroimaging Protocol
2
High-resolution Brain Structural Imaging
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MRI data were collected on a Siemens Magnetom Tim Trio 3.0T MR scanner, and 32 channels head coil was used to acquire the MRI data. Routine imaging studies, including axial T1-weighted images, T2-weighted images, and T2-weighted FLAIR images were obtained for every subject to detect any clinically silent lesions. For each patient, the high-resolution brain structural images of the whole brain were obtained using a T1-weighted 3D MPRAGE sequence with the following parameters: 176 sagittal slices, thickness/gap = 1.0/0 mm, matrix size = 256 × 256, FOV = 256 mm × 256 mm, TR = 2,300 ms, TE = 2.98 ms, flip angle = 9°, voxel size = 1.0 mm × 1.0 mm × 1.0 mm.
3
Whole-brain fMRI Acquisition and Resting-state Task
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Whole‐brain MRI data were acquired with a 3T scanner (Siemens TIM Trio), and a 32 channels head‐coil, at the Brain & Behavior Laboratory, University of Geneva. The Blood Oxygenation Level Dependent (BOLD) contrast was measured using a T2*‐weighted echo‐planar sequence (EPI). Two hundred and fifty functional volumes of 36 axial slices each (TR/TE/flip angle = 2100 ms/30 ms/80°, FOV = 205 mm, resolution = 64 × 64, isotropic voxels of 3.2 mm3, distance factor 20%) were acquired. Furthermore, we collected a high‐resolution T1‐weighted anatomical image [TR/TI/TE/flip angle = 1900 ms/900 ms/2.27 ms/9°, FOV = 256 mm, resolution = 256 × 256, slice thickness = 1 mm3, 192 sagittal slices, phase encoding direction = anterior–posterior (AP)]. Our sequence included four dummy scans (∼9 s) at the beginning of the fMRI scanning. The subjects were instructed to lie awake, with normal breathing, and not think about anything in particular for 8 min.
4
Multimodal MRI Acquisition Protocol
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Data were acquired on a 3T Siemens Magnetom Trio scanner with a 32-channels head-coil at the Lemanic Biomedical Imaging Center (CIBM) in the CHUV, Lausanne. Each participant underwent three MRI acquisitions: 1) T1-weighted 3D gradient-echo sequence (160 slices, voxel size = 1 x 1 x 1 mm), 2) diffusion spectrum imaging sequences (DSI) (257 diffusion-weighted volumes, 1 b0 volume, maximum b-value 8000 s/mm2, resolution of 2.21 × 2.21 × 3 mm) and 3) a resting-state functional MRI (single-shot echo planar imaging gradient echo sequence) of 10 minutes (voxel size = 3 x 3 x 3 mm, repetition time = 2 s; echo time = 30 ms; flip angle = 90°; number of slices = 32; 10% gap). In the fMRI sequence, the 32 slices were acquired in a sequential ascending order, and covered the whole head volume in the AC-PC plane. We limited head movements with head’s paddings. Furthermore, subjects were scanned twice, before (timepoint 1, tp1) and after (timepoint 2, tp2) the visuomotor adaptation and were instructed to relax without thinking about anything in particular and to keep their eyes open. Several task-related functional acquisitions were done but not analyzed here [49 (link)].
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