We have recorded the sounds of a number of the most common sequences run at CUBRIC, which may be useful in acclimatising participants to the noise of a scan.
All of the WAV files are available here , and the sequences available are;
ASL-quipssIOP.wav (Perfusion, IOP)
ASSET.wav
B0map.wav (Fieldmap)
Coldhead.wav (Magnet room background noise)
DESPOT-IRSPGR.wav
DESPOT-SPGR.wav
DESPOT-SSFP.wav
DTI.wav
EPI.wav (fMRI)
FSE-B1map.wav
FSE.wav (T2 Fast Spin Echo)
FSPGR.wav
Localiser.wav
MRS-MEGAPRESS.wav (MEGA-PRESS GABA spectroscopy)
Prescan.wav (run before each separate sequence)
qMT.wav (quantitative MT)
Showing posts with label acquisition. Show all posts
Showing posts with label acquisition. Show all posts
Wednesday, 8 August 2012
Sunday, 24 June 2012
Summary Parameters of Standard Scans
MEG FSPGR - Suitable for MEG/fMRI/Retinotopic/mri3dX
3D FSPGR Oblique-Axial
resolution: 1mm isotropic matrix 256x256x176,
field of view 256x256x176
TR/TE=7.9/3.0 ms
TI=450ms
Flip angle=20deg
1 NEX (acq time ~ 10min)
Quick FSPGR - Suitable for MEG/fMRI/Retinotopic/mri3dX
3D FSPGR Oblique-Axial
resolution: 1mm isotropic matrix 256x192x176 (zero-padded to 256x256x176),
field of view 256x192x176mm
TR/TE=7.9/3.0 ms
TI=450ms
Flip angle=20deg
1 NEX (acq time ~ 7min)
High-Resolution FSPGR - NOT suitable for mri3dX/MEG/Retinotopic
3D FSPGR Oblique-Axial
resolution: 0.8mm isotropic matrix 320x320x194 (zero padded to 512x512x194)
field of view 256x256x155mm
TR/TE=7.9/3.0 ms
TI=450ms
Flip angle=20deg
1 NEX (acq time ~ 10min)
30 direction DTI Oblique-Axial.
(ACPC)
TR/TE=Cardiac Gated/87ms (effective)
FOV: 23cm
Acquisition matrix: 96x96
Slice Thickness: 2.4mm 60 slices
30 directions, 3B0.
Parallel acceleration (ASSET) factor=2
(acq time~13mins)
60 direction DTI Oblique-Axial. (ACPC)
TR/TE=Cardiac Gated/87ms (effective)
FOV: 23cm Acquisition matrix: 96x96
Slice Thickness: 2.4mm
60 slices 60 directions, 6B0.
Parallel acceleration (ASSET) factor=2
(acq time~25mins)
3.4mm Isotropic GRE-EPI (for fMRI) An fMRI data set was acquired using Gradient Echo-EPI with the following parameters; TR/TE=3000/35 ms, flip angle=90deg, acquisition matrix=64x64, field-of -view=22cm. 53 slices of thickness 3.4mm were acquired, orientated parallel with each subject's ACPC line (oblique-axial). A parallel acceleration (ASSET) factor of 2 was used.
3D FSPGR Oblique-Axial
resolution: 1mm isotropic matrix 256x256x176,
field of view 256x256x176
TR/TE=7.9/3.0 ms
TI=450ms
Flip angle=20deg
1 NEX (acq time ~ 10min)
Quick FSPGR - Suitable for MEG/fMRI/Retinotopic/mri3dX
3D FSPGR Oblique-Axial
resolution: 1mm isotropic matrix 256x192x176 (zero-padded to 256x256x176),
field of view 256x192x176mm
TR/TE=7.9/3.0 ms
TI=450ms
Flip angle=20deg
1 NEX (acq time ~ 7min)
High-Resolution FSPGR - NOT suitable for mri3dX/MEG/Retinotopic
3D FSPGR Oblique-Axial
resolution: 0.8mm isotropic matrix 320x320x194 (zero padded to 512x512x194)
field of view 256x256x155mm
TR/TE=7.9/3.0 ms
TI=450ms
Flip angle=20deg
1 NEX (acq time ~ 10min)
30 direction DTI Oblique-Axial.
(ACPC)
TR/TE=Cardiac Gated/87ms (effective)
FOV: 23cm
Acquisition matrix: 96x96
Slice Thickness: 2.4mm 60 slices
30 directions, 3B0.
Parallel acceleration (ASSET) factor=2
(acq time~13mins)
60 direction DTI Oblique-Axial. (ACPC)
TR/TE=Cardiac Gated/87ms (effective)
FOV: 23cm Acquisition matrix: 96x96
Slice Thickness: 2.4mm
60 slices 60 directions, 6B0.
Parallel acceleration (ASSET) factor=2
(acq time~25mins)
3.4mm Isotropic GRE-EPI (for fMRI) An fMRI data set was acquired using Gradient Echo-EPI with the following parameters; TR/TE=3000/35 ms, flip angle=90deg, acquisition matrix=64x64, field-of -view=22cm. 53 slices of thickness 3.4mm were acquired, orientated parallel with each subject's ACPC line (oblique-axial). A parallel acceleration (ASSET) factor of 2 was used.
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