Resting-state fMRI scans were collected on a GE3-T scanner. Five-minute resting-state functional scans (150 whole-brain volumes) were acquired for each study participant. During the scan, participants were asked to close their eyes and were instructed not to think of anything in particular. The acquisition parameters and preprocessing methods are described in the data supplement; notably, strict attention was paid to potential motion artifacts according to the methods described by Power et al. (23 (link)).
3t ge scanner
Manufactured by GE Healthcare
Sourced in United States
The 3T GE scanner is a magnetic resonance imaging (MRI) system designed for clinical use. It operates at a field strength of 3 Tesla, providing high-quality images for diagnostic purposes. The core function of the 3T GE scanner is to generate detailed and accurate representations of the body's internal structures through the use of strong magnetic fields and radio waves.
Automatically generated - may contain errors
14 protocols using 3t ge scanner
1
Resting-State fMRI Acquisition and Preprocessing
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Evaluating Q-spoiling Circuits in High-Field MRI
3
Multimodal MRI Brain Imaging Protocol
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A GE 3T scanner (General Electric, Milwaukee, Wisconsin, USA) and a standard quadrature head coil was employed to acquire the MR images. Functional images covering the whole brain were acquired using a T2*-weighted gradient echo planar imaging sequence (repetition time, TR/echo time, TE = 4,000/40 ms; slice thickness = 4.5 mm; matrix = 128 × 128; FOV = 240 mm). Functional matching axial T1-weighted images (TR/TE = 600/8 ms; slice thickness = 4.5 mm) were acquired for anatomical coregistration purposes. Additionally, 3D T1-weighted SPGR (spoiled gradient recalled) sequences (TR/TE = 22/4 ms; slice thickness = 1.5 mm; matrix = 256 × 256) covering the entire brain were acquired.
4
Resting-State fMRI and Structural MRI Acquisition
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MRI data were collected using a GE 3-T scanner (GE Medical Systems, WI, USA) in a dark room at Osaka University Hospital. Standard foam pads were placed in the scanner to stabilize patients’ heads. rsfMRI data were acquired with axial gradient-echo echo-planar imaging (voxel size = 3.3×3.3×3.2 mm, slice gap = 0.8 mm, matrix size = 64×64×40, TE = 30 ms, TR = 2.5 s, flip angle = 80°, 240 volumes). During the rsfMRI scans, patients were instructed to keep their eyes fixed on a black cross located at the center of the screen and keep their bodies as steady as possible, without any thoughts in their minds. Structural MRI data were obtained with a T1-weighted sagittal inversion-recovery spoiled-gradient-echo sequence (voxel size = 1.2×1×1 mm, matrix size = 200×256×256, TE = 3.2 ms, TR = 8.2 ms, inversion time = 400 ms). Both MRI scans were performed during the “on” state of each patient.
5
Neuroimaging Protocol for Functional Connectivity
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Structural and functional images for the unpublished study were collected on a whole-body GE 3T scanner at Mississippi State University. The scanning session began with the acquisition of structural images, which included scanner-specific localizers and volume anatomical series. The volume anatomical scan was acquired in a sagittal plane (1 mm3) using the GE SPGR sequence and the functional data were co-registered to these images. The functional runs were acquired as 28 axial slices using a T2*-weighted echo-planar imaging (EPI) pulse sequence (TE = 30 ms, TR = 2000 ms, FOV = 24 cm, slice thickness = 4 mm with no gap, flip angle = 76, in-plane resolution = 3.75 × 3.75 mm). A similar fMRI acquisition was done for the prior two published studies using a Siemens 3T Trio scanner at the University of Pittsburgh (for detailed scan parameters see Moss et al., 2011 (link), 2013 (link)).
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3T MRI Brain Imaging Protocol
7
Functional and Structural Brain Imaging
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FMRI data was collected on a 3 T GE scanner (GE Medical Systems, Milwaukee, WI, USA), equipped with an 8-channel head coil. Thirty-six slices were acquired parallel to the anterior commissure – posterior commissure line. Others parameters were: slice thickness: 3.4 mm, matrix size: 64 × 64, field of view: 220 mm × 220 mm, flip angle: 45°, echo time: 31 ms, and repetition time: 2100 ms. Three-dimensional anatomical images of the entire brain were obtained with a T1-weighted gradient echo pulse sequence (number of slices: 172, slice thickness: 1.0 mm, repetition time: 9.972 ms, echo time: 2.912 ms, field of view: 240 mm × 240 mm, flip angle: 20°, and matrix size: 256 × 192). Cushions were placed around participants’ heads to minimize head movement.
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MRI Acquisition for Multimodal Neuroimaging
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MRI data were acquired with a 3T GE scanner (General Electric Medical Systems, Milwaukee, WI) using an eight‐channel head coil in the PERFORM Centre of Concordia University. Functional MRI were acquired using a gradient‐echo echo‐planar imaging sequence (repetition time (TR) = 2,500 ms; TE = 26 ms; FA = 90°; 41 transverse slices; 4‐mm slice thickness with a 0% inter‐slice gap; FOV = 192 × 192 mm; voxel size = 4 × 4 × 4mm3; and matrix size = 64 × 64). High‐resolution T1‐weighted anatomical MR images were acquired using a 3D BRAVO sequence (TR = 7,908 ms; TI = 450 ms; TE = 3.06 ms; FA = 12°; 200 slices; voxel size = 1.0 × 1.0 × 1.0 mm, FOV = 256 × 256 mm). During all EEG–fMRI sessions, the helium compression pumps used for cooling down MR components were switched off to reduce MR environment related artefacts infiltrating the EEG signal (Mullinger, Brookes, Stevenson, Morgan, & Bowtell, 2008 (link); Rothlübbers et al., 2015 (link)). To minimize movement‐related artefacts during the scan, MRI‐compatible foam cushions were used to fix the participant's head in the MRI head coil (Mullinger & Bowtell, 2011 (link)).
9
Volumetric Analysis of Functional Brain Signals
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Imaging measurements were acquired through a 3T GE scanner (GE, Milwaukee, WI, USA). All images were acquired using a standard quadrature head coil. The scanning session included anatomical and functional imaging. A 3D spoiled gradient echo (SPGR) sequence with high resolution (a slice thickness of 1 mm) was acquired for each person, in order to allow volumetric statistical analyses of the functional signal change and to facilitate later coordinate determinations. The functional T2* weighted images were acquired using gradient echo planar imaging pulse sequence (TR/TE/flip angle = 3000/35/90) with FOV of 200 × 200 mm2, and acquisition matrix dimensions of 96 × 96. Thirty-nine contiguous axial slices with 3.0 mm thickness and 0 mm gap were prescribed over the entire brain, resulting in a total of 159 volumes (6201 images).
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Multimodal MRI Acquisition for Functional Brain Imaging
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