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Weight-tuning process using the WTPN for a testing case (testing case 3). (a) Evolution of organ weights; (b) Corresponding d2cc of different OARs; (c) ψ function values; (d) DVHs of plans at weight tuning steps 0 (initial weights), 5 and 25; (e) DVHs plotted with absolute volume. Horizontal line shows 2cc volume.
