Difference between revisions of "MBIRN: structural calibration dissemination"
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| − | * | + | * '''Human Acquisition Protocol''' |
| + | |||
| + | Sequence: 3D spoiled gradient echo (FLASH type) | ||
| + | Vendor's standard birdcage RF coil | ||
| + | Slice orientation: Sagittal | ||
| + | No partial Fourier | ||
| + | NEX=1 | ||
| + | FOV= 25cm | ||
| + | Phase matrix=192 | ||
| + | Readout matrix=256 | ||
| + | Number of Slices: 124 (no skip, whole head coverage, avoid wrap around) | ||
| + | Slice Thickness: 1.3mm-1.5mm | ||
| + | TE= minimum allowed with centered (symmetric) echo. | ||
| + | TR=20 ms | ||
| + | Slab Selection: No (i.e., hard RF pulses) | ||
| + | scan 1: flip angle 30 degrees (T1-weighted image) | ||
| + | scan 2: flip angle 5 degrees (proton-density-weighted image) | ||
| + | scan 3: flip angle 20 degrees (T1-weighted image) | ||
| + | scan 4: flip angle 3 degrees (proton-density-weighted image) | ||
| + | Acquisition time per scan: about 8min 12sec | ||
| + | |||
| + | <br /> | ||
| + | |||
| + | * '''Phantom Acquisition Protocol''' | ||
| + | |||
| + | Sequence: 3D spoiled gradient echo (FLASH type) | ||
| + | Vendor's standard birdcage RF coil | ||
| + | Slice orientation: Sagittal | ||
| + | No partial Fourier | ||
| + | NEX=1 | ||
| + | FOV= 40cm | ||
| + | Phase matrix=192 | ||
| + | Readout matrix=256 | ||
| + | Number of Slices: 124 (no skip, whole phantom coverage, avoid wrap around) | ||
| + | Slice Thickness: 2 mm | ||
| + | TE= minimum allowed with centered (symmetric) echo. | ||
| + | TR=20 ms | ||
| + | Slab Selection: No (i.e., hard RF pulses) | ||
| + | scan 1: flip angle 30 degrees without vendor's distortion correction | ||
| + | scan 2: flip angle 30 degrees with vendor's distortion correction (if available) | ||
| + | Acquisition time per scan: about 8min 12sec | ||
<br /> | <br /> | ||
Revision as of 14:04, 18 December 2006
Home < MBIRN: structural calibration dissemination- Overview of dissemination contents
- Multi-site phantom data: phantom that helps asses image distortions from gradient non-linearities
- Multi-site human data: healthy volunteers, most of which were scanned twice at the participating sites
- Human Protocol: multi-spectral 3D structural (FLASH with multiple flip angles: 30, 20, 5, 3 degrees)
- Sites: Five sites with different 1.5T systems (Siemens, GE, Philips/Picker)
- Human Acquisition Protocol
Sequence: 3D spoiled gradient echo (FLASH type) Vendor's standard birdcage RF coil Slice orientation: Sagittal No partial Fourier NEX=1 FOV= 25cm Phase matrix=192 Readout matrix=256 Number of Slices: 124 (no skip, whole head coverage, avoid wrap around) Slice Thickness: 1.3mm-1.5mm TE= minimum allowed with centered (symmetric) echo. TR=20 ms Slab Selection: No (i.e., hard RF pulses) scan 1: flip angle 30 degrees (T1-weighted image) scan 2: flip angle 5 degrees (proton-density-weighted image) scan 3: flip angle 20 degrees (T1-weighted image) scan 4: flip angle 3 degrees (proton-density-weighted image) Acquisition time per scan: about 8min 12sec
- Phantom Acquisition Protocol
Sequence: 3D spoiled gradient echo (FLASH type) Vendor's standard birdcage RF coil Slice orientation: Sagittal No partial Fourier NEX=1 FOV= 40cm Phase matrix=192 Readout matrix=256 Number of Slices: 124 (no skip, whole phantom coverage, avoid wrap around) Slice Thickness: 2 mm TE= minimum allowed with centered (symmetric) echo. TR=20 ms Slab Selection: No (i.e., hard RF pulses) scan 1: flip angle 30 degrees without vendor's distortion correction scan 2: flip angle 30 degrees with vendor's distortion correction (if available) Acquisition time per scan: about 8min 12sec
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