MRI scans were performed using a 3.0T Discovery 750 MRI scanner (GE Healthcare, Waukesha, WI) with 6-element flex coils and a flat insert table (GE Healthcare). Thirty slices with an axial field of view of 25.6 cm and slice direction in the superior-inferior direction (slice thickness of 4 mm) were selected to cover the spatial region encompassing the palatine process region cranially to the cricoid cartilage caudally for all scans. The T1-weighted MRI sequence was a three-dimensional spoiled gradient recalled echo sequence with flip angle 15°, repetition time 3.6 ms, echo time 1 ms, effective number of excitations 0.7, pixel bandwidth 325 Hz, acquisition pixel size 2 mm × 2mm (matrix size 128 × 128), and zero filling interpolation × 2. This resulted in reconstructed voxel sizes of 1 mm × 1 mm × 4 mm. The T2-weighted MRI sequence was a two-dimensional fast spin echo multi-slice sequence with flip angle 90°, repetition time ~3600 ms, echo time ~100 ms, effective number of excitations 1, pixel bandwidth 195 Hz, slice thickness 2.5 mm, gap 1.5 mm, acquisition pixel size 1 mm × 1 mm, and zero filling interpolation × 2.
3.0t discovery 750 mri scanner
Manufactured by GE Healthcare
Sourced in United States
The 3.0T Discovery 750 MRI scanner is a magnetic resonance imaging system designed and manufactured by GE Healthcare. It utilizes a 3.0 Tesla superconducting magnet to generate high-resolution images of the human body. The scanner is capable of performing various imaging techniques, including but not limited to, T1-weighted, T2-weighted, and diffusion-weighted imaging.
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Lab products found in correlation
2 protocols using 3.0t discovery 750 mri scanner
1
Detailed MRI Scanning Protocol for Head and Neck
2
T2-weighted MRI Acquisition Protocol
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MR images were acquired with a 3.0-T Discovery 750 MRI scanner (GE Healthcare, Waukesha, WI, USA) with laterally placed 6-channel phased array flex coils (GE Healthcare) centered on tumor covering from palatine process down to the lower edge of cricoid cartilage. T2-weighted fast spin echo (FSE) sequence were acquired in the same immobilization position as in the treatment planning CT scans as described in details in a previous report [12] (link). By doing so, we minimized patient positioning differences in the acquisition of CT and MR images resulting in a minimized registration error between the two sets of images. Specific imaging acquisition parameters of the T2-weighted FSE sequence are as follows: FOV = 256 mm, Slice thickness = 2.5 mm and Matrix = 512 × 512, giving pixel size of 0.5 × 0.5 × 2.5 mm; Repetition Time (TR) = 3.7 s; Echo Time (TE) = 97 ms; Echo Train Length (ETL) = 16. The distance from the skin surface to the center of FOV was less than 10 cm for all patients included in this study.
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