DTI data were collected by a trained MRI technician with one of the study team members present at West Coast Medical Imaging (Victoria, BC) on a 3T GE Signa Pioneer MRI scanner pre- and post-intervention. The images were acquired with an EPI sequence, axially, with the following parameters: TR = 8000 ms, TE = 101 ms, flip angle = 90, 52 slices, voxel size = 1.4 × 1.4 × 2.0 mm. There were 48 images acquired for each scan: 45 diffusion-weighted images (b = 1000 s/mm2) and 3 non-diffusion-weighted images (b = 0 s/mm2). The acquisition took approximately 6 min.
Signa pioneer mri scanner
Manufactured by GE Healthcare
The Signa Pioneer MRI scanner is a magnetic resonance imaging (MRI) system developed by GE Healthcare. It is designed to acquire high-quality medical images for diagnostic purposes. The Signa Pioneer utilizes powerful magnetic fields and radio waves to generate detailed images of the body's internal structures, allowing healthcare professionals to assess and evaluate various medical conditions.
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Lab products found in correlation
3 protocols using signa pioneer mri scanner
1
Diffusion Tensor Imaging Protocol
2
MRI Scanning Protocol for Exploring EMTB
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A 3T SIGNA Pioneer MRI scanner (GE Healthcare) with a 32-channel phased-array head–neck coil was employed, and scanning was performed after clinical data collection and neuropsychological tests in the MRI scanning room. During scanning, all of the participants were instructed to close their eyes and remain awake. The scanning parameters were as follows: (I) echo planar imaging for rs-fMRI, repetition time (TR) =3,000 ms, echo time (TE) =35 ms, slice =30, slice thickness =3.5 mm, interslice gap =0 mm, voxel size =3.8×3.8×3.5 mm3, flip angle =90°, field of view (FOV) =240×240 mm2, matrix size =64×64, and session period =6 min 24 s; (II) fast spoiled gradient-recalled imaging for high-resolution three-dimensional (3D) T1-weighted anatomical imaging, TR=7,400 ms, TE =1.0 ms, flip angle =9°, FOV =240×240 mm2, matrix size =256×256, slice thickness =1.2 mm, interslice gap =0 mm, voxel size =0.9×0.9×1.2 mm3, slice =252 slices, and session period =2 min 49 s. In addition, the T2-weighted images and T1-weighted fluid-attenuated inversion recovery (T1-FLAIR) images of 32 patients were collected to ensure that there were no lesions in the brains of patients with EMTB. The T2-weighted images and T1-FLAIR images are included in the supplementary materials (see Figures S1-S32 in for details).
3
MRI Phantom Evaluation Protocol
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A series of MRI measurements were performed on a 24-well phantom, where 12 wells contained five iron concentrations (in duplicate) dispersed in agarose 0.5%, and two agarose controls. Imaging was performed utilizing a 3-tesla Signa Pioneer MRI scanner, manufactured by GE HealthCare, with a 21-channel brain coil. T1 sequences were acquired with a fixed repetition time of 2000 ms, a fixed echo time of 7 ms, and inversion times of 700, 500, 400, 150, 100, 80, and 50 ms. A matrix size of 224 x 224 was employed, with a slice thickness of 3 mm and a slice gap of 3.3 mm. T2 sequences were acquired with a fixed repetition time of 2000 ms and echo times of 10, 20, 30, 40, 50, 60, 90, 110, 130, 150, and 170 ms. A matrix size of 256 x 212 was employed, with a slice thickness of 3 mm and a slice gap of 3.3 mm. The total intensity of each well was measured using the ImageJ program by selecting a circular ROI of 109 mm2 area for each image.
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