Signa hdx 3.0 tesla mri scanner

Whole-brain fMRI was conducted using the s General Electric 16-channel fixed-site Signa HDx 3.0 Tesla MRI scanner in the Bio-Imaging Research Center of the University of Georgia. The scanner was equipped with a three-axis local gradient head coil and elliptical endcapped quadrature radio frequency coil. Structural images were acquired for anatomical reference using a high-resolution T1-weighted, fast-spoiled gradient echo scan to cover the whole brain (TR = 7.8 ms; TE = 3.1 ms; FOV = 256 × 256 mm; matrix = 256 × 256; 160 contiguous 1 mm axial slices; voxel size, 1 mm³). Functional images were collected using a single-shot, gradient-echo echoplanar pulse sequence (TR = 2500; TE = 40 ms; FOV = 224 × 224 mm; matrix = 64 × 64). Contiguous 3.5-mm thick axial slices were selected to provide coverage of the entire brain in isometric 3.5 mm voxels.

Imaging data was collected at the University of Georgia Bio-Imaging Research Center with a General Electric 16-channel fixed-site Signa HDx 3.0 Tesla MRI scanner. Structural images were acquired for anatomical reference using a high-resolution T1 SPGR sequence (voxel size = 1mm³, a field of view = 256 × 256 mm, matrix = 256 × 256, and slice thickness = 1mm, slices collected axially). Sufficient contiguous axial slices were acquired to obtain whole-brain coverage. Functional imaging used T2* echo planar imaging (EPI) with a single-shot gradient echo pulse sequence (TR = 2500 ms, TE = 25 ms, field of view = 225 × 225 mm, matrix = 64 × 64, voxel size = 3.5 mm³, slice thickness = 3.5 mm, slices collected axially). One imaging run of 108 brain volumes was acquired during the GWL paradigm.

Imaging data was collected on a General Electric 16-channel fixed-site Signa HDx 3.0 Tesla MRI scanner. Structural images were acquired for anatomical reference using a high-resolution T1 SPGR sequence (voxel size = 1mm³, a field of view = 256² mm, matrix = 256², slice thickness = 1mm) with sufficient contiguous axial slices for whole-brain coverage. Functional imaging was conducted using T2* echo planar imaging (EPI) with a single-shot gradient echo pulse sequence (TR = 2500 ms, TE = 25 ms, field of view = 225² mm, matrix = 64², voxel size = 3.5 mm³, with 40 contiguous 3.5 mm slices collected axially). Three dummy samples preceded each functional scan.