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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Magn Reson Med. 2014 Jun 9;73(5):1926–1931. doi: 10.1002/mrm.25315

Table 1.

The requisite longer echo spacing at 1.5T versus 3.0T increases the relative difference in the first moments at the two echo times for these two field strengths. This table shows some of the imaging parameters that were used in this study, as well as the associated first moments of the readout gradients at the two echo times. Note that acquiring partial echoes compared to full echoes can make ΔM1 smaller or larger.

Field Strength RBW TE1/TE2 M1(TE1) M1(TE2) ΔM1
1.5 T Full Echo ± 90.9 kHz 2.1 / 4.2 ms 0.40 G(ms)2/cm −0.85 G(ms)2/cm − 1.26 G(ms)2/cm
Partial Echo ± 90.9 kHz 2.1 / 4.2 ms 0.80 G(ms)2/cm −0.14 G(ms)2/cm − 0.93 G(ms)2/cm
3.0 T Full Echo ± 250 kHz 1.3 / 2.4 ms 0.65 G(ms)2/cm −0.05 G(ms)2/cm −0.70 G(ms)2/cm
Partial Echo ± 250 kHz 1.1 / 2.2 ms 0.34 G(ms)2/cm −0.47 G(ms)2/cm −0.80 G(ms)2/cm