Fig. 5.

Simulated 2D phantom images with various pulse durations and constant dwell time of 5 μs. As the pulse duration increases image artifacts become more severe in the uncorrected image (a–c). The proposed algorithm and hard pulse excitation (d–f) removes the artifacts inside the sinc main lobe indicated by the dashed circle. However, residual artifacts are still visible outside the circle (f), which is also evident in the difference images (g–i). Combination of our algorithm and quadratic-phase modulated pulse effectively correct the artifact even when the pulse duration is four times of dwell time (j–o).