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. 2020 Aug 27;85(1):68–77. doi: 10.1002/mrm.28449

FIGURE 4.

FIGURE 4

PSFs of conventional SP and VASP for different FOV anisotropies and shapes. The central slices of the transverse plane and the coronal plane are shown in the top row and the bottom row, respectively, with zoomed images of the main lobe in the top right corner of each image. The white dashed lines indicate the applied unaliased FOV, which is specified in voxel units below. PSF of (A) conventional SP with 62919 projections, (B) VASP with 62919 projections for ellipsoidal FOV of 177 × 177 × 260, (C) VASP with 49339 projection for spherical FOV of 177 × 177 × 177, (D) VASP with 22468 projections for ellipsoidal FOV of 177 × 177 × 62, and (E) VASP with 24174 projections for cylindrical FOV of 117 × 117 × 62. Note: PSF of (A) conventional SP is similar to that of (B) VASP with FOV ratio of 68:68:100. (E) PSF of VASP with cylindrical FOV produced some low‐level aliasing within the applied FOV, indicated by the yellow circle. PSF, point spread function