MR imaging was performed in mTBI patients within 7 days of the injury. MR data were acquired with a Philips Achieva 3.0T TX MRI scanner (Royal Philips, Amsterdam, Netherlands). The MR protocol included anatomical imaging (T1 and T2), resting-state fMRI, and DTI. High-resolution T1-weighted structural images were acquired with a MPRAGE sequence. The imaging parameters were TR/TE = 8.2/3.5 ms; flip angle = 8 degree; slice thickness = 1 mm, voxel size = 1 × 1 mm, FOV = 256 × 256. The T1 acquisition time was 4.56 min. Resting-state fMRI data were acquired with a FE-EPI sequence. The sequence parameters were: TR/TE = 1,500/35 ms, flip angle = 90 degree, slice thickness = 5 mm, voxel size = 3.75 × 3.75 mm, FOV = 240 × 240 mm, acquired matrix = 64 × 64, dyn = 210. Participants were asked to keep their eyes focused on cross-hairs projected onto a screen, and not think of anything during image acquisition. The total resting-state fMRI acquisition time was 5.35 min. Diffusion tensor images were acquired with a single-shot echo-planar sequence (TR/TE = 9,000/90 ms, slice thickness = 2 mm, voxel size = 2 × 2 mm, field of view = 256 × 256 mm). Diffusion gradients were set in 32 non-collinear directions by using two b-values (b = 0 and 1,000 s/mm2). The total DTI acquisition time was 5.5 min.
Achieva 3.0t tx mri scanner
Manufactured by Philips
The Achieva 3.0T TX MRI scanner is a magnetic resonance imaging system designed and manufactured by Philips. It operates at a magnetic field strength of 3.0 Tesla, providing high-quality imaging capabilities for a wide range of medical applications.
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Lab products found in correlation
6 protocols using achieva 3.0t tx mri scanner
1
MRI Imaging of Mild Traumatic Brain Injury
2
High-resolution Structural and Functional MRI Acquisition
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Imaging data were collected using a 32-channel head coil on a 3T Philips Achieva 3.0T TX MRI scanner at the Center for Biomedical Imaging Research, Tsinghua University. High-resolution structural T1*-weighted anatomical images of the whole brain were acquired using a 3D gradient-echo pulse sequence (time repetition [TR] = 7.65 ms, echo time [TE] = 3.73 ms, flip angle [FA] = 8°, field of view [FOV] = 230 × 230 mm, voxel size = 1 × 1 × 1 mm3, 1 mm thickness). T2*-weighted function images were acquired using a gradient-echo echo-planar sequence based on blood oxygenation level-dependent contrast with the following parameters: TR = 2,000 ms, TE = 35 ms, FA = 90°, FOV = 200 × 200 mm, 64 × 64 matrix, voxel size = 3.12 × 3.12 × 4 mm3, 30 slices, 4 mm thickness.
3
Structural Brain MRI Analysis Protocol
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Head MRI data were acquired using a Philips Achieva 3.0T TX MRI scanner equipped with an 8-channel coil. A whole-brain 3D high-resolution anatomic scan was performed with a T1-weighted 3D Turbo field echo sequence (repetition time 8.1 ms, echo time 3.7 ms, 160 sagittal slices, voxel size 1 × 1 mm, matrix 256 × 256 pixels, field of view 240 × 240 mm, and flip angle 8). Cortical thickness and sub-cortical gray matter volume were calculated by FreeSurfer software (15 (link), 16 (link)).
4
Diffusion Tensor Imaging in mTBI
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All MR images were acquired with a Philips Achieva 3.0T TX MRI scanner (Royal Philips, Amsterdam, Netherlands). Diffusion-tensor images were acquired with a single-shot echo-planar sequence (TR/TE = 9,000 ms/90 ms, slice thickness = 2 mm, voxel size = 2 mm ∗ 2 mm, and field of view = 256 ∗ 256 mm). Diffusion gradients were set in 32 noncollinear directions by using two b values (b = 0 and 1,000 s/mm2). Diffusion-tensor imaging was performed in mTBI patients within 7 days of injury.
5
Shoulder MRI Acquisition Protocol
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All images were acquired using a Philips Achieva 3.0T TX MRI scanner (Philips Healthcare, Best, The Netherlands). The patients were placed in a supine position with arms located by their sides, palmar surfaces facing upwards and shoulders and arms immobile. The axial MR images of the shoulder, which were roughly perpendicular to the humeral shaft axis, were obtained using a dedicated 8-channel shoulder coil using a transverse proton weighted spin echo sequence (TR/TE: 3379/30, field of view: 16 cm, matrix: 380 × 273, number of excitations: 2, slice thickness/gap: 2.5/2.75 mm). In addition, a transverse T1 weighted spin echo sequence of the distal humerus was acquired using the body coil of the MRI scanner (TR/TE: 694/8.8, field of view: 16 cm, matrix: 308 × 240, number of excitations: 2, slice thickness/gap: 2.5/2.75 mm).
6
3T MRI Protocol for Structural and Diffusion Imaging
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MR data were acquired with a Philips Achieva 3.0T TX MRI scanner (Royal Philips, Amsterdam, Netherlands). The MR protocol included anatomical imaging (T1 and T2) and diffusion tensor imaging. High-resolution T1-weighted structural images were acquired with a MPRAGE sequence: TR/TE = 8.2 ms/3.5 ms; flip angle = 8 degree; slice thickness = 1mm, voxel size = 1 mm *1 mm, FOV = 256*256. Diffusion data were acquired with a single-shot echo-planar sequence (TR/TE = 9,000 ms/90 ms, slice thickness = 2mm, in-plane image resolution = 2 mm *2 mm, field of view = 256 * 256 mm). 32 non-collinear diffusion gradient directions were used with b = 1,000 s/mm2, and one b = 0 s/mm2 reference image. These imaging parameters were consistent with the common data element standard for TBI [20 (link)].
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