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(a) Experimental setup for validation of the phantom, depicting the lung module, the 3-axis platform (used in 1D mode) used for motion actuation, and (inset) the latex foam insert. The locations of the external markers are indicated. Also shown are image frames in (b) inhale and (c) exhale phases, acquired using kV fluoroscopy. The three external and six internal markers segmented in the figure were used in the analysis.
