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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2008 Sep 1;72(1):236–246. doi: 10.1016/j.ijrobp.2008.04.051

Figure 6.

Figure 6

Patterns of prostate movement: (a) stable target at baseline, (b) continuous drift, (c) transient excursion, (d) persistent excursion, (e) high-frequency excursion, and (f) irregular movement (red: superior/inferior direction; green: left/right direction; blue: anterior/posterior direction; black: vector length of the shift).