Figure 2From: Four-dimensional measurement of the displacement of metal clips or postoperative surgical staples during 320-multislice computed tomography scanning of gastric cancerCentroid trajectories of metal clips in all 41 phases for 20 s of the four-dimensional CT scans. (A) Patient 6. (B) Patient 1. RL = right–left; AP = anterior–posterior; CC = cranio–caudal.Back to article page