RARE MRI:
Acquisition parameters were: echo time of 12 ms, effective echo time of
36 ms, rare factor of 8, repetition time of 3665.46 ms, effective
spectra bandwidth of 37,878.8 Hz, duration of read diphase of 1.3 ms,
duration of 2D phase gradient of 1 ms, repetition spoiler duration of
2.0 ms with 30.0% strength, excitation length of 2.7 ms with 2,000 Hz
bandwidth, refocusing pulse (180 degrees) length= 1.71 ms with 2,000 Hz
bandwidth, number of dummy scans = 2. A field of view (FOV) of 1.26 cm x
1.26 cm with 80 slices (slice thickness = 200 µm) and a matrix of 512
for a resolution of 24.60 x 24.60 x 200 µm3 was used.
The total acquisition time for 32 scan averages, number of scans (NS),
was 9 hours and 10 minutes. This method was also tested on the sandstone
core, but visualization of the water distribution in the pore space was
not successful [5].