Figure 2. Signal Evolution of a Three Dimensional Slice.

The phantom (FOV=6cm) used to simulate signal from a three dimensional slice centered at z=1cm is shown in panel a. For very thin slices (blue), the phase, magnitude, and transform of the signal are similar to the line, sinc, and tophat that would respectively be predicted from an infinitely thin disk. As the slice gets larger, the phase and magnitude plots exhibit the features noted in Figure 1. Furthermore, the transform of these signals becomes lopsided, as well as broadened, reflecting the asymmetric distribution of frequency bins across the rectangular slice.