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A 74-year-old male patient with pT2 pN0 cM0 R0 G3 SCLC in the middle lobe. Semi-automated segmentation process. (A) A radiologist manually set seeds in the tumor (green, solid arrow) and the surrounding tissue (yellow, dashed arrow). (B) The grow-cut algorithm is applied and automatically segments the tumor. Note small error on the medial side (short arrow). Such errors are corrected manually. (C) Final tumor segmentation.
