Figure 5.

The 1D point spread function (PSF) for phase-encoded MRSI with 16 points (part a) and with reduced spatial signal spread and resolution when applying a Hamming k-space filter (part b). The PSF of the more commonly used 16 x 16 circularly sampled 2D phase-encoding scheme for MRSI is illustrated in part c) and the corresponding Hamming filtered PSF in part d). A nominal resolution of 1 cm and 16 cm field-of-view was used for all plots. Due to the PSF and its filtering, the effective voxel size is considerably larger than the nominal voxel size.