The MRI scans used in the present study were performed between June 2009 and December 2012. All subjects underwent MRI scanning with a Philips 3T Achieva Quasar Dual MRI scanner (Philips Medical System, Best, The Netherlands) at the First Affiliated Hospital of Zhejiang University. For each participant, the MRI scanning was performed within 2 weeks after neuropsychological testing. Foam pads were used to minimize head motion, and earplugs were used to diminish noise during scanning. High-resolution T1-weighted structural images were acquired for a whole-brain 3-D MRI with a magnetization-prepared rapid-acquisition gradient echo sequence using the following parameters: 144 sagittal slices; thickness, 1.0 mm; 256×256 matrix; field of view, 256×256 mm; TE, 3.7 ms; and TR, 2000 ms. A diffusion-weighted data set was also collected with an echo planar image sequence using the following parameters: 45 transversal slices; 30 gradient directions; thickness, 3.0 mm; no gap; 192×192 matrix; field of view, 240×240 mm; TE, 93 ms; TR, 6046 ms; b1, 0; and b2, 1000 s/mm2.
3t achieva quasar dual mri scanner
Manufactured by Philips
The 3T Achieva Quasar Dual MRI scanner is a high-field magnetic resonance imaging (MRI) system designed by Philips. It operates at a magnetic field strength of 3 Tesla, providing high-resolution images for diagnostic and research purposes. The system features a dual-gradient design that allows for faster image acquisition and enhanced image quality. The technical specifications and capabilities of this MRI scanner are intended to be utilized by trained medical professionals and researchers.
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Lab products found in correlation
2 protocols using 3t achieva quasar dual mri scanner
1
MRI Scanning for Neuropsychological Assessment
2
Diffusion MRI Acquisition Protocol
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Diffusion MRI data were acquired from all subjects on a Philips 3T Achieva Quasar Dual MRI scanner (Philips Medical System, Best, The Netherlands), using a single-shot echoplanar imaging (EPI) sequence (TR = 13586 ms, TE = 79 ms). For each diffusion scan, 61 gradient directions (b = 2400 s/mm²) and a non-diffusion-weighted acquisition (b = 0 s/mm²) were acquired over a 96mm² image matrix (FOV 240 mm x 240 mm² ); with a slice thickness of 2.5 mm and no gap, yielding 2.5 mm isotropic voxels.
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