All MRI scans were performed on a 1.5T Discovery MR450 scanner (GE Healthcare, Milwaukee, Wisconsin) using an 8-channel surface receive coil (USAI, Aurora, OH). Single shot fast spin echo (SSFSE) T2-weighted images were performed as follows: for the fetal brain, TE 160ms, TR 1100ms, FOV 320 ×320 mm, 2mm slice thickness and 40 to 60 consecutive slices for full brain coverage in all 3 orthogonal plans (axial, coronal, sagittal); for the placenta, fat suppressed with TE 160ms, TR 1100ms, FOV 420 × 420mm, 4mm slice thickness and 40 to 60 consecutive slices for full placental coverage in the axial plane 20 (link). No contrast or sedation was used for any of the imaging studies.
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Fetal Brain and Placenta MRI Protocol
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Corresponding Organization :
Other organizations : Children's National, George Washington University
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Variable analysis
independent variables
- MRI scanner model (1.5T Discovery MR450 scanner)
- Receive coil (8-channel surface receive coil)
- Sequence type (single shot fast spin echo (SSFSE) T2-weighted images)
- MRI parameters for fetal brain (TE 160ms, TR 1100ms, FOV 320 × 320 mm, 2mm slice thickness, 40 to 60 consecutive slices)
- MRI parameters for placenta (fat suppressed, TE 160ms, TR 1100ms, FOV 420 × 420mm, 4mm slice thickness, 40 to 60 consecutive slices)
- Not explicitly mentioned
- No contrast or sedation used for any of the imaging studies
- No positive or negative controls specified
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