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. Author manuscript; available in PMC: 2018 Mar 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2016 Nov 9;97(3):596–605. doi: 10.1016/j.ijrobp.2016.11.004

Figure 2.

Figure 2

Two concurrent pairs of navigator and bellows waveforms of a regular (V1:A&B) and an irregular (V6:C&D) breather. The blue dots in waveforms (A&C) are triggers for acquisition with 10s training period at the beginning, ~0.5s gaps during image acquisition, and ~20s gaps for patient instructions near the end. The blue dots in B&D are mapped from A&C based on time synchronization. The re-binning of navigator-triggered images makes the even slice distribution in navigator bins (black line) become uneven distribution in the bellows bins (E).