Skip to main content
. Author manuscript; available in PMC: 2012 Jul 12.
Published in final edited form as: Phys Med Biol. 2011 May 4;56(11):3181–3198. doi: 10.1088/0031-9155/56/11/002

Figure 2.

Figure 2

Phantom 1 for 4D CT; (a), (b) and (c) are the image X, the background of the image X1 and the motion/change of the image X2, respectively, at phase 1, i.e. X = X1 + X2. Similarly, (d), (e) and (f) correspond to X, X1 and X2 at phase 16, and (g), (h) and (i) correspond to X, X1 and X2 at phase 32.