Imaging was performed using a Signa 1.5 Tesla (GE Medical Systems, Milwaukee, Wisconsin) MRI scanner at the Functional MRI Research Center, Neurological Institute, Columbia University. During fMRI scanning, stimuli were presented with presentation software and displayed on VisuaStim XGA LCD screen goggles (Resonance Technology, Northridge, CA). Functional data were acquired using a gradient-echo, T2*-weighted echoplanar imaging (EPI) with blood oxygen level-dependent (BOLD) contrast pulse sequence. Twenty-four contiguous axial slices were acquired along the AC-PC plane, with a 64 × 64 matrix and 20 cm field of view (voxel size = 3.125 × 3.125 × 4.0 mm, repetition time = 2000 ms, echo time = 40 ms, flip angle = 60°).
Signa 1.5 tesla
Manufactured by GE Healthcare
The Signa 1.5 Tesla is a magnetic resonance imaging (MRI) system manufactured by GE Healthcare. It operates at a magnetic field strength of 1.5 Tesla, which is a common field strength for clinical MRI systems. The Signa 1.5 Tesla is designed to acquire high-quality images of the human body for diagnostic purposes.
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Lab products found in correlation
3 protocols using signa 1.5 tesla
1
fMRI Acquisition Using 1.5T MRI
2
Breast MRI Imaging Protocol
3
MRI Perfusion Imaging with pCASL
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MRI examinations were performed on either a GE Signa 1.5 Tesla or 3 Telsa scanner (GE Healthcare, Milwaukee, Wisconsin). All MRI studies included T2-weighted, T2 FLAIR, DWI, SWI and ASL sequences.
ASL was performed with the GE product pseudocontinuous ASL (pCASL) sequence (General Electric, Milwaukee, WI), which incorporates a 3D stack-of-spirals fast spin echo readout. pCASL-specific parameters include a labeling duration of 1.5 s and post labeling delay (PLD) of 2 s (adapted from ASL white paper recommendations (Alsop et al., 2015 (link)). 3D spiral readout parameters include spiral interleaves = 8, points per spiral = 512, slices = 36, in-plane resolution: 3.64–4.53 mm2, slice thickness = 4.0 – 4.2 mm, FOV = 24–26 cm, TE = 9.5–10.5 ms, bandwidth = 62.5 kHz, TR = 4800–4847 ms, NEX = 3, and scan time = 4 m 32 s to 4 m 42 s.
ASL was performed with the GE product pseudocontinuous ASL (pCASL) sequence (General Electric, Milwaukee, WI), which incorporates a 3D stack-of-spirals fast spin echo readout. pCASL-specific parameters include a labeling duration of 1.5 s and post labeling delay (PLD) of 2 s (adapted from ASL white paper recommendations (Alsop et al., 2015 (link)). 3D spiral readout parameters include spiral interleaves = 8, points per spiral = 512, slices = 36, in-plane resolution: 3.64–4.53 mm2, slice thickness = 4.0 – 4.2 mm, FOV = 24–26 cm, TE = 9.5–10.5 ms, bandwidth = 62.5 kHz, TR = 4800–4847 ms, NEX = 3, and scan time = 4 m 32 s to 4 m 42 s.
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