FIGURE 6.

Phantom images demonstrating the performance of VASP compared to conventional SP. (A) A cylindrical phantom was placed in between 2 elongated cylindrical phantoms as shown in the sagittal scout image. The central slice of the transverse plane and the coronal plane are shown in the top and bottom row, respectively, in (B‐E). All the images in (B‐E) were acquired using a volume selective RF excitation shown by the yellow dotted lines in (A), and the unaliased FOVs are shown by white dotted lines in (B‐E). Images acquired using (B) conventional SP with 7933 projections for unaliased FOV of 78 × 78 × 115 mm³, and (D) conventional SP with 4896 projections for 61 × 61 × 90 mm³. Images acquired using (C) VASP with 7933 projections for ellipsoidal unaliased FOV of 130 × 130 × 46 mm³, and (E) VASP with 4896 projections for ellipsoidal unaliased FOV of 103 × 103 × 36 mm³. Note the reduced aliasing artifacts (highlighted by yellow arrows) in VASP when compared to conventional SP for each of the number of radial projections