Patient 2, coronal views for the 4D-VOI, full 4D, MB, and 3D reconstructions. The tumor moves 3 mm in the anterior–posterior direction. Zoomed-in view of tumor. Top left: 4D-VOI, top right: Full 4D, bottom left: MB, bottom right: 3D. Image size: 13 cm. Window/level: 500/0.