Fig. 3

Effect on spatial resolution of CS reconstruction. Mean signal profiles at the boundary of compartment 3 of the virtual phantom as an illustration of the point-spread function using (a) 16, (b) 32, and (c) 64 phase encoding steps are shown for FT reconstruction (bold black line) and CS reconstructions with R = 1, 3 and 5 (red, purple, and blue lines respectively). The profile from equivalent acquisition-weighted (Hanning) FT reconstructed MRSI data is included for comparison (dotted line). All data are normalized to a maximum amplitude of 1.0