Reference images of continuity of the IRHV. The vs, scan time, CS factor, and total PI factor of each reference image are: (a) reference standard, 20 s scan, (b) vs 4, 10 s scan, CS 2.0, PI 2.4, (c) vs 3, 10 s scan, CS 1.55, PI 3.1, (d) vs 2, 6 s scan, CS 2.0, PI 4.0, (e) vs 1, 10 s scan, CS 1.2, PI 4.0. The continuity of IRHV vanished (arrows). CS, compressed sensing; IRHV, inferior right hepatic vein; PI, parallel imaging; vs, visual score.