The NIST phantom was acquired with a multislice Spin Echo sequence (TR = 2400 ms, TE = 20 ms). Field of view = 256 mm x 256 mm, image matrix = 256 x 256, slice thickness = 5 mm, number of slices = 24. The number of subvoxels = 2 x 1 x 4, total number of subvoxels = 25,578,520. The calculation time was 34.8 min.

The T2 of the deionized water filled with the spherical container is very long (2000 ms!), a lot of multiple and higher order echoes are generated and ghosting artifacts are observed in the reconstructed images as shown below. So we varied the T2 to be 2000 ms, 200 ms, and 20 ms.

T2 of the surrounding water = 2000 ms:

 

T2 of the surrounding water = 200 ms:

 

T2 of the surrounding water = 20 ms: