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. Author manuscript; available in PMC: 2019 Jun 27.
Published in final edited form as: Phys Med Biol. 2018 Jun 27;63(13):13NT01. doi: 10.1088/1361-6560/aaca1b

Figure 5.

Figure 5

Range probing with anatomical mid-ranges or single energy mid-ranges and their respective probing beam dose. Top row (left to right): (a) CT with contours of target (crescent shape), body (large outer circle), and OAR (small inner circle); (b) WEPL in target according to horizontal beam direction from negative to positive position, and red curve indicating the mid-values of WEPL; (c) plan dose with red curve indicating the dose peaks on the beam paths, and three horizontal lines (dashed, dash-dot, and dotted) indicating the positions of three dose profiles shown in the inset. Middle row (left to right): (d) treatment plan (beam intensity map) with red curve indicating the anatomical mid-range; (e) mid-range probing beam intensity extracted from the treatment plan; (f) probing dose with red curve indicating the dose peaks along the beam paths, and three horizontal lines (dashed, dash-dot, and dotted) indicating the positions of three probing beam dose profiles shown in the inset. Bottom row ((g), (h), and (i)): same as the middle row, except for the single-energy mid-range.