. Author manuscript; available in PMC: 2008 Aug 1.

Published in final edited form as: J Magn Reson. 2007 Apr 27;187(2):177–183. doi: 10.1016/j.jmr.2007.04.011

Table 1.

Diffusion coefficients calibrated using the bPGSTE and MAGSTE methods from the reference and glass beads phantoms. For the reference phantom, measurements from both sequences were equal and showed very little change when the encoding time was varied. On the other hand, for glass beads phantoms, the MAGSTE diffusion measurements were significantly higher than those measured using bPGSTE method. When the coding interval (τ) was reduced from 6 to 4 ms, bPGSTE measurements for the shortest storage time (i.e. TS= 8ms) increased by 15% and 6% for 90 and 150μm beads phantoms, respectively, while the MAGSTE measurements showed only a moderate change of 7% and 3%, respectively.

Phantom	D_bPGSTE (μm²/ms)		Change (%)	D_MAGSTE (μm²/ms)		Change (%)
	τ =6 ms	τ=4 ms		τ=6 ms	τ=4 ms
90 μm beads	1.40	1.65	15%	1.76	1.90	7%
150 μm beads	1.92	2.05	6 %	2.1	2.17	3%
Reference	2.24 ± 0.02			2.25 ± 0.03