Table 1.
Phase | MR Sequence | RF coil position | Sequence parameters | Voxel resolution mm3 | Strain |
---|---|---|---|---|---|
1 | 2D RARE T2-weighted + CSF contrast & 3D FLASH | Left lateral | TR = 6500 msec, TE (effective) = 26 ms, FA = 90o, RARE factor = 4, Time per scan = 8 min 40 sec, 9 scan repetitions for a total scan time of ∼80 min | 0.1 × 0.1 × 0.225 | SHRSP (N = 5) |
TR = 25 msec, TE = 4 msec, FA = 20°, Averages = 1, time/scan = 4 min 10 s, 10–14 scans ∼1hr | 0.15 × 0.15 × 0.15 | ||||
1 | 2D RARE multi-TE RARE sequence | Left lateral | TR = 5000 ms, 4 echoes with TE = 15, 30, 45, 60 ms, FA = 90°, RARE factor = 1, Averages = 4, scan time of 1 h 25 m | 0.078 × 0.078 × 0.25 | SHRSP (N = 2) |
2 | 2D RARE multi-TE RARE sequence + CSF contrast & 3D FLASH | Left lateral | TR = 5000 ms, 4 echoes with TE = 15, 30, 45, 60 ms, FA = 90°, RARE factor = 1, Averages = 4, scan time of 1 h 25 m | 0.078 × 0.078 × 0.25 | WKY (N = 6) SHRSP (N = 6) |
TR = 25 msec, TE = 4 msec, FA (flip angle) = 20°, Averages = 1, time/scan = 4 min 10 s, 14 scans = 58 min | 0.10 × 0.10 × 0.10 |
SHRSP: spontaneously hypertensive stroke prone; WKY: Wistar Kyoto; RARE : RAPID Acquisition with Relaxation Enhancement; FLASH: 3D Fast Low Angle Shot.