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. 2016 May 18;43(6):2948–2964. doi: 10.1118/1.4948679

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© 2016 American Association of Physicists in Medicine.

0094-2405/2016/43(6)/2948/17/$30.00

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FIG. 1. — Examples depicting the complexity of HNC segmentation in FDG PET scans. [(a)–(c)] Volume rendering of PET scans, showing the primary cancer [arrow in (d)–(i)] and lymph nodes with uptake. [(d)–(f)] Rendering of segmentations of individual lesions shown in (a)–(c) combined with a volume rendering of the corresponding PET volume. [(g)–(i)] Examples of PET cross sections with outlined tumor segmentations. (g) Necrotic primary tumor with metabolically active adjacent lymph node. [(h) and (i)] Cases with multiple lesions and varying degrees of tracer uptake.