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. Author manuscript; available in PMC: 2015 Mar 15.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2014 Jan 17;88(4):907–912. doi: 10.1016/j.ijrobp.2013.11.245

Fig. 4.

Fig. 4

Comparison of tumor motion trajectories from cine-MRI (magnetic resonance imaging), 4-dimensional (4D) computed tomography (CT), and 4D-MRI in orthogonal planes (superior–inferior [SI], anterior–posterior [AP], and medial–lateral [ML]). Error bars are standard deviations of multiple measurements in 4D computed tomography and 4D-MRI and are standard deviations of multiple breathing cycles in cine-MRI. Each of the 30-second-long tumor motion trajectories of the single-slice cine MRI was processed to generate average tumor motion trajectories that contain only 1 breathing cycle for motion comparison.