|
Size: 1862
Comment:
|
← Revision 16 as of 2013-03-08 10:21:22 ⇥
Size: 76
Comment: converted to 1.6 markup
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 1: | Line 1: |
| = Standard imaging sequences = | |
| Line 3: | Line 2: |
| == CBU_EPI == || Description || Standard EPI sequence for fMRI || || Acquisition time || 2 s (per volume) || || Type || 2D || || Slices || 32 || || Slice gap || 25% || || Slice thickness || 3 mm || || Slice order || Interleaved (1, 3, 5... 2, 4, 6) || || FOV || 192 mm x 192 mm || || Matrix || 64 x 64 || || Resolution || 3 mm x 3mm || || TR || 2000 ms || || TE || 30 ms || || Flip angle || 78 deg || || Bandwidth || 2232 Hz/Px || === Trigger pulse timing === To within a few ms, the stimulus delivery trigger pulse happens 35 ms before the acquisition of the first scan (centre of k space) of each volume. Note there is a latency of 20 ms in the visual display. The trigger pulse length is 1 ms. === Slice order === The slice order is interleaved: 1, 3, 5... 2, 4, 6. To put this into SPM directly when asked for the slice order write [1:2:31 2:2:32]. This is the default for aa_ver1 == CBU_MPRAGE == || Description || High-resolution structural MRI || || Acquisition time || 4 min 16 s || || Type || 3D || || FOV || 256 mm x 240 mm x 160 mm || || Matrix || 256 x 240 x 160 || || Resolution || 1 mm isotropic || || TR || 2250 ms || || TI || 900 ms || || TE || 2.99 ms || || Flip angle || 9 deg || || Parallel imaging || GRAPPA || || Acceleration factor PE: 2 || || Reference lines PE: 24 || == CBU_Fieldmapping == || Description || Magnetic field mapping sequence. Required for [[BR]] - undistortion of fMRI data [[BR]] - functional sensitivity mapping || || Acquisition time || 54 s || || Type || 2D || || Slices || 32 || || Slice gap || 25% || || Slice thickness || 3 mm || || FOV || 192 mm x 192 mm || || Matrix || 64 x 64 || || Resolution || 3 mm x 3 mm || || TR || 400 ms || || TE || 5.19 ms / 7.65 ms || || Flip angle || 60 deg || |
This page has moved to [[CbuImaging:ImagingSequences|Imaging Sequences]] |
This page has moved to Imaging Sequences