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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: J Magn Reson. 2011 Jun 25;212(1):116–123. doi: 10.1016/j.jmr.2011.06.016

Figure 4.

Figure 4

Measured diagonal, z → z, eddy-current-induced gradients ([Gz,ζ/Gz,test] × 100%) in MRI system #1 (see Table 2 for system specifications) vs. delay time, δ, between the falling edge of the gradient test-pulse and the start of the FID acquisition. For the six-point sample (3-D) measurement (□), the gradient parameters were 2.5 s duration, 1 G/cm gradient amplitude; for the 1-D sample measurement (●), the gradient parameters were 2.5 s duration, 6 G/cm gradient pulse. After compensation, negligible eddy-current gradients remained as evidenced by results from the six-point sample measurement (■) and 1-D sample measurement (○) after properly setting the gradient pre-emphasis.