Parameter
|
Image Sequence
|
qMT
|
DTI
|
General
|
Sequence type |
3D, MT-weighted gradient-recalled echo |
2D, multi slice, single-shot spin-echo EPI |
Preparation phases |
Receiver gain, center frequency, VOI shim |
Receiver gain, center frequency, VOI shim |
Number of excitations |
2 |
6 |
Total scan duration (min:sec) |
10:41 |
6:28 |
Geometry
|
Anatomical plane(s) |
Axial |
Axial |
Number of slices |
11 |
11 |
Slice thickness (mm) |
7 |
7 |
Inter-slice gap (mm) |
0 |
0 |
Acquired matrix |
128 x 128 x 6 |
64 x 64 |
Reconstructed matrix |
128 x 128 x1 |
128 x 128 |
Field of view (mm) |
256 x 256 x 77 |
256 x 256 |
Reconstructed voxel size (mm) |
2.00 x 2.00 x 7.00 |
2.00 x 2.00 x 7.00 |
Contrast
|
Repetition time (ms) |
50 |
4,000 |
MT pulse |
Nominal flip angles: 360°, 820°; Pulse width: 20ms; Frequency offsets: 1, 2, 5, 10, 20, 50, 100 kHz |
N/A |
Diffusion weighting (b) (s•mm-2) |
N/A |
b=450; 15 directions + one b=0 image |
Fat signal suppression (when used) |
1331 binomial water-selective excitation |
Gradient reversal; Sinc-Gauss pre-pulse (90°, duration: 18 ms, frequency offset: 100 Hz) |
Echo time (ms) |
3.9 |
48 |
Number of echoes/ echo spacing (ms) |
N/A |
N/A |
Excitation flip angle (°) |
6 |
90 |
RF shimming |
Adaptive |
Adaptive |
Signal acquisition
|
Readout type |
Cartesian |
Cartesian |
Parallel imaging |
SENSE (g=1.5) |
SENSE (g=1.5) |
Bandwidth/pixel (Hz/pixel) |
383 |
42.1 |