Initial functional localiser scans (n = 14) and all TBS/fMRI scans (n = 16) were conducted on a 3.0T GE Sigma MRI scanner in the Clinical Research Center on the National Institutes of Health campus (Bethesda, MD). Whole-brain volumes were acquired using an eight-channel head coil (28 slices; 3 × 3 × 4 mm; 10% interslice gap; TR, 2 s, TE, 30 ms; matrix size, 64 × 64, FOV, 192 mm). In each TBS/fMRI scanning session, two T1-weighted anatomical images were acquired using the magnetization-prepared rapid gradient echo (MPRAGE) sequence (176 slices; 1 × 1 × 1 mm; TR, 2.53 s, TE, 3.47 ms, TI, 900 ms, flip angle 7°).
Sigma mri scanner
Manufactured by GE Healthcare
Sourced in United States
The Sigma MRI scanner is a magnetic resonance imaging system designed and manufactured by GE Healthcare. It is a diagnostic imaging device that uses strong magnetic fields and radio waves to generate detailed images of the internal structures of the human body. The Sigma MRI scanner is capable of producing high-quality images that can aid in the diagnosis and treatment of various medical conditions.
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Lab products found in correlation
5 protocols using sigma mri scanner
1
Functional Brain Imaging at 3T
2
Functional Brain Imaging at 3T
3
BOLD Functional Imaging Protocol
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BOLD functional images were obtained for all participants on a 1.5T General Electric Sigma MRI scanner (GE, Milwaukee, WI, USA) [repetition time (TR)/echo time (TE)=3,000/50 ms, field of view (FOV)=22×22 cm, 64×64 pixel matrix, 20 axial slices per scan, slice thickness=5 mm, gap=1.5 mm].
A total of 204 whole brain volumes were acquired for each run. The first two scans were discarded from analysis to allow magnetic saturation effects. All scanning parameters were selected to optimize the quality of the BOLD signal while maintaining a sufficient number of slices to acquire whole-brain data. Stimuli were presented via a back-projection system.
A total of 204 whole brain volumes were acquired for each run. The first two scans were discarded from analysis to allow magnetic saturation effects. All scanning parameters were selected to optimize the quality of the BOLD signal while maintaining a sufficient number of slices to acquire whole-brain data. Stimuli were presented via a back-projection system.
4
Functional MRI and Anatomical Imaging Protocol
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All functional data were acquired on a 3.0 T GE Sigma MRI scanner in the Clinical Research Center on the National Institutes of Health campus (Bethesda, MD). Whole-brain volumes were acquired using an eight-channel head coil (28 slices; 3 × 3x4mm; 10% interslice gap; TR, 2 s, TE, 30 ms; matrix size, 64 × 64, FOV, 192 mm). T1-weighted anatomical images were acquired using the magnetization-prepared rapid gradient echo (MPRAGE) sequence (176 slices; 1 × 1x1mm; TR, 2.53 s, TE, 3.47 ms, TI, 900 ms, flip angle 7°) in the localizer session and in each TMS-fMRI session both before and after TMS.
5
Functional MRI Acquisition Across Scanners
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Participants were scanned on either a 3.0T GE Sigma MRI scanner (Scanner 1) or a 3.0T GE 750 MRI scanner (Scanner 2) in the Clinical Research Center on the National Institutes of Health campus (Bethesda, MD, USA) as part of independent experiments.
Across scanners, partial volumes of the occipital and temporal cortices were acquired.
Scanner 1 : eight-channel head coil; 28 slices; 3 mm3 voxel size with 10% interslice gap; TR = 2. TE = 30 ms; matrix size = 64 × 64, FOV = 192 mm.
Scanner 2 : thirty-two channel head coil; 37 slices; 3 mm3 voxel size with 10% interslice gap; TR = 2. TE = 30 ms; matrix size = 64 × 64, FOV = 192 mm.
Across scanners, partial volumes of the occipital and temporal cortices were acquired.
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