MRI scans were performed using a 3.0 T Trio Siemens MRI scanner equipped with a 12-channel coil in the Functional Imaging Centre of the Institute of Neuroscience of the Chinese Academy of Science in Shanghai. T1-weighted imaging was obtained by 3D magnetization-prepared rapid acquisition gradient echo (MPRAGE), with the following parameters: sequence of 176 axial slices; slice thickness, 1.0 mm; flip angle, 9°; voxel size, 1.0*1.0*1.0 mm3; echo time (TE), 3 ms; repetition time (TR), 2300 ms; and inversion time (TI), 1000 ms. Data were obtained via echo-planar imaging (EPI) as follows: sequence of 32 axial slices; slice thickness, 4.0 mm; flip angle, 90°; voxel size, 3.8*3.8*4.0 mm3; TE, 30 ms; and TR, 2000 ms. DTI data were acquired with 42 slices; slice thickness, 3 mm; voxel size, 1.7*1.7*3.0 mm3; TE, 94 ms; TR, 6000 ms; b-values, 0, 1000 s/mm2; diffusion gradient directions, 30; and FOV, 220 mm. Patients were instructed to remain awake with their heads still, their eyes closed and no specific thoughts.
12 channel coil
Manufactured by Siemens
Sourced in Germany, France
The 12-channel coil is a piece of lab equipment designed for magnetic resonance imaging (MRI) applications. It is a multi-channel radio frequency (RF) coil that can be used to acquire MRI data from up to 12 separate channels simultaneously. The core function of the 12-channel coil is to transmit and receive the electromagnetic signals required for MRI image acquisition.
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Lab products found in correlation
Trio mri scanner, by Siemens (2 mentions)
3t tim trio scanner, by Siemens (2 mentions)
Tim trio scanner, by Siemens (1 mentions)
Trio 3t mri scanner, by Siemens (1 mentions)
Trio 3t scanner, by Siemens (1 mentions)
Trio 32 channel tim system, by Siemens (1 mentions)
32 channel head coil, by Siemens (1 mentions)
Tim trio 3 tesla scanner, by Siemens (1 mentions)
Trio scanner, by Siemens (1 mentions)
11 protocols using 12 channel coil
1
Multimodal Brain Imaging Acquisition Protocol
2
High-resolution 3T MRI Structural Imaging Protocol
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Images were acquired using a Siemens 3 T Trio Tim scanner with a 12-channel coil. Each participant was scanned 3 times using a high-resolution T1-weighted magnetization prepared rapid gradient echo (MPRAGE) whole brain scan (TR=2,300 ms; TE=2.98 ms; FA=9° ; matrix=240 × 256; FOV=256; sagittal plane; voxel size=1 × 1 × 1 mm; 160 slices). MPRAGE scans were aligned, averaged and segmented using FreeSurfer version 5.1 (http://surfer.nmr.mgh.harvard.edu/ ) and were used for coregistration with the PET data. The 3 MPRAGE scans were averaged to minimize the effect of head motion on the quality of image segmentation.
3
High-resolution MRI Acquisition and Analysis
4
Multimodal Neuroimaging Protocol for Resting-State fMRI
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Data acquisition was performed at the Oxford Centre for Clinical Magnetic Resonance Research (OCMR) using a 3 T Trio Siemens MRI scanner equipped with a 12-channel coil.
T1-weighted images were obtained using a 3D magnetization prepared-rapid acquisition gradient echo (MPRAGE) sequence (192 axial slices, flip angle 8°, 1 × 1 × 1 mm3 voxel size, echo time/repetition time/inversion time = 4.7 ms/2040 ms/900 ms) for volumetric and registration purposes.
Resting state functional MRI was acquired using gradient echo planar imaging (EPI) (repetition time = 2000 ms, echo time = 28 ms, flip angle = 89°, resolution = 3 × 3 × 3.5 mm). Thirty-four axial slices were acquired per volume, covering both hemispheres with incomplete coverage of the cerebellum; 180 repetitions were acquired in 6 min. Participants were instructed to remain still and awake with their eyes open.
T1-weighted images were obtained using a 3D magnetization prepared-rapid acquisition gradient echo (MPRAGE) sequence (192 axial slices, flip angle 8°, 1 × 1 × 1 mm3 voxel size, echo time/repetition time/inversion time = 4.7 ms/2040 ms/900 ms) for volumetric and registration purposes.
Resting state functional MRI was acquired using gradient echo planar imaging (EPI) (repetition time = 2000 ms, echo time = 28 ms, flip angle = 89°, resolution = 3 × 3 × 3.5 mm). Thirty-four axial slices were acquired per volume, covering both hemispheres with incomplete coverage of the cerebellum; 180 repetitions were acquired in 6 min. Participants were instructed to remain still and awake with their eyes open.
5
Multimodal Brain Imaging Protocol for Cognitive Neuroscience
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MRI data were collected on a Siemens 3-T Trio MRI scanner using a 12-channel coil. High-resolution (1 × 1 × 1 mm voxels) T1-weighted anatomical images were acquired with the following parameters: repetition time (TR) = 2,530 ms, echo time (TE) = 3.32 ms, flip angle = 7°, 176 1-mm thick slices, field of view (FOV) = 256 × 256 mm. Functional images (3 × 3 × 3 mm voxels) were acquired using an echo planar imaging pulse sequence with the following parameters: TR = 2,000 ms, TE = 30 ms, flip angle = 90°, 36 interleaved slices with 0.5-mm gap, FOV = 216 × 216 mm. Additionally, a field map was acquired to allow for field inhomogeneity distortion correction, with TE1/TE2/TR = 4.5/6.96/600.
MRI data were preprocessed and analyzed in SPM122 . Data from each subject underwent the same preprocessing steps (motion correction and unwarping, coregistration of the T1 image to mean EPI image, and segmentation of the T1 image to different tissues). The fMRI data were normalized to MNI space with 2 × 2 × 2-mm voxels using a standard SPM12 algorithm and smoothed with a 6-mm Gaussian kernel.
MRI data were preprocessed and analyzed in SPM12
6
Multimodal Neuroimaging Protocol: Structural and Diffusion-Weighted Imaging
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Image data were acquired on a Siemens 3T Trio scanner with a 12-channel coil, and three-dimensional T1-weighted structural images were acquired using the magnetization-prepared rapid gradient-echo imaging sequence: TR (relaxation time) = 1,900 ms; TE (echo time) = 2.56 ms; flip angle = 9°; field of view (FOV) = 250 mm × 250 mm; 192 contiguous 1-mm sagittal slices; voxel size = 1 mm × 1 mm × 1 mm). Diffusion-weighted images were acquired using the single-shot echo-planar imaging sequence: TR = 8,700 ms; TE = 90 ms; flip angle = 90°; FOV = 240 mm × 240 mm; 64 3-mm sagittal slices; voxel size = 2 mm × 2 mm × 3 mm; and 64 diffusion volumes weighted with bmax = 1,100 s/mm2 and one volume with no diffusion gradient (b0 = 0 s/mm2).
7
Multimodal neuroimaging protocol for brain analysis
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Images were acquired using a 3 T Siemens TRIO 32-channel TIM system and a 12-channel coil for signal reception while the subjects laid in a supine position in the scanner. Thirty-six oblique axial slices covering the full volume of the brain were acquired using a gradient echo T2-weighted echo planar sequence sensitive to blood oxygenation level dependent (BOLD) contrast (TR = 2100 ms, TE = 40 ms, flip angle = 90°, voxel size = 2 × 2 × 3 mm3, interleaved, matrix size = 64 × 64). All the participants were instructed to keep their eyes opened to avoid falling asleep during the fMRI recordings. High-resolution T1-weighted images were acquired for anatomical localization (TR = 2300 ms, TE = 4 ms, TI = 900 ms, 144 sagittal three dimensional MP-RAGE images, voxel size = 1 × 1 × 1 mm3, matrix size = 256 × 256). Diffusion-weighted imaging data were also acquired using high angular resolution diffusion imaging with echo planar imaging (TR = 15 s, TE = 102 ms, flip angle = 90°, b-value = 1000 s/mm2, 50 gradient-encoding directions, 80 interleaved axial slices, voxel size = 1.7 × 1.7 × 2 mm3, FOV = 256 × 256 mm2, matrix size = 128 × 128).
8
High-Resolution MRI Acquisition for Pediatric Neuroscience
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Whole-head, high-resolution T1-weighted structural images were collected using one of two custom 32-channel head coils made for children112 (link), a 12-channel coil, or the standard Siemens 32-channel head coil in 176 interleaved sagittal slices (TR = 2,530 ms, TE= 1.64/3.5 ms/5.36 ms/7.22 ms, resolution = 1 mm isotropic). Whole-brain functional BOLD data were collected in 32 near-axial slices (3 mm thick) in an interleaved order with a 20% distance factor (TR = 2,000 ms, TE = 30 ms, flip angle = 90°, bandwidth = 2298 Hz/Px, custom pediatric coils: FoV = 192 mm; standard 32-channel head coil: FOV = 256 mm; 12-channel head coil: FOV = unavailable, phase encoding A>P direction, matrix size = 64x64, in-plane resolution = 3 mm × 3 mm). PACE was used to adjust the position of the gradients based on the participant’s motion one TR back111 (link).
9
Multimodal MRI Assessment of Brain Aging
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Baseline magnetic resonance imaging (MRI) scans were conducted on a Siemens TrioTIM 3-Tesla scanner (Siemens, Erlangen, Germany) with a 12-channel coil. High-resolution 3D T1-weighted multiecho magnetization prepared rapid acquisition gradient-echo anatomical images were collected with the following parameters: time repetition (TR) = 2200 ms, multiecho time echoes (TEs) = 1.54, 3.36, 5.18, and 7 ms, flip angle = 7°, 4x acceleration, 1.2 × 1.2 × 1.2 mm voxels and processed with FreeSurfer 5.1 (http://surfer.nmr.mgh.harvard.edu ) using the default processing stream. As described previously (Hedden et al., 2016 (link)), volume measures were extracted from bilateral hippocampus and from bilateral striatum (average of caudate and putamen), and corrected for estimated total intracranial volume. Cortical thickness values were obtained from bilateral parahippocampal gyrus and from bilateral entorhinal cortex. As previously described (Hedden et al., 2016 (link)), average cortical thickness was computed across a broad set of cortical regions implicated in aging (Fjell et al., 2013 ).
10
High-Resolution Structural MRI Acquisition
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Images were acquired using a Siemens 3T Trio Tim scanner with a 12-channel coil. Each participant was scanned on 3 occasions using a high-resolution T1-weighted magnetization prepared rapid gradient echo (MPRAGE) whole-brain scan (TR = 2,300 ms; TE = 2.98 ms; FA = 9°; matrix = 240 × 256; FOV = 256; sagittal plane; voxel size = 1 × 1 × 1 mm; 160 slices). The 3 MPRAGE scans were aligned, averaged, and segmented using FreeSurfer version 5.1 (http://surfer.nmr.mgh.harvard.edu/ ) and the averaged template was used for coregistration with the PET data.
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