Brain imaging was obtained on a GE Discovery MR750W 3.0-Tesla scanner (Milwaukee, WI, USA) and eight-channel phased array coil. ASL data were obtained by a 3D pseudo-continuous fast spin echo sequence with background suppression (36 slices; echo time [TE], 10.7 ms; repetition time [TR], 4854 ms; post-label delay [PLD], 2025 ms; slice thickness, 4 mm without gap; number of excitations, 3; in-plane resolution, 3.37×3.37 mm; field of view [FOV], 240×240 mm; flip angle [FA], 111°). The scanning time of the ASL sequence was 4 min and 42 s. We used foam padding to prevent head movement and earplugs to reduce noise. During the ASL data acquisition, all HCs and patients with PT were asked to stay awake, keep their eyes closed, and avoid thinking of anything.
Discovery mr750w 3.0 tesla scanner
Manufactured by GE Healthcare
Sourced in United States
The Discovery MR750W 3.0-Tesla scanner is a magnetic resonance imaging (MRI) system developed by GE Healthcare. It is designed to provide high-quality imaging capabilities with a wide 3.0-Tesla magnetic field strength.
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Lab products found in correlation
2 protocols using discovery mr750w 3.0 tesla scanner
1
Brain Perfusion Imaging with 3D ASL MRI
2
Resting-State fMRI Acquisition and Analysis
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All MR images were obtained using a Discovery MR750w 3.0 Tesla scanner equipped with a 24-channel head coil (GE Healthcare, Waukesha, WI, United States). Each participant was instructed to focus on a fixation cross during the rs-fMRI scan. To obtain blood oxygen level-dependent (BOLD) fMRI data for the rs-fMRI scan, we applied the following pulse sequence: single-shot echo-planar sequence (TR/TE = 2500/30 ms, flip angle = 80°, field of view = 212 mm, matrix = 64 × 64, and voxel size = 3.3 × 3.3 × 4.0 mm3) with an acquisition time of 10 min 10 s. Forty contiguous slices were acquired in ascending order. The total number of recorded volumes was 244 for each participant. Immediately after the scan, each participant rated their sleepiness during the scan using a 7-point scale (1 = not at all, 7 = more than ever). After the rs-fMRI scan, each participant underwent a high-resolution anatomical MRI scan: T1-weighted 3D FSPGR (TR/TE = 7.7/3.1 ms, flip angle = 11°, field of view = 240 mm, matrix = 256 × 256 mm2, and voxel size = 1.0 × 1.0 × 1.2 mm3), with an acquisition time of 4 min 26 s.
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