Skip to main content
. Author manuscript; available in PMC: 2017 Jul 19.
Published in final edited form as: J Nucl Med. 2008 Jun;49(Suppl 2):96S–112S. doi: 10.2967/jnumed.107.045948

FIGURE 6.

FIGURE 6

18F-FAZA–based imaging of hypoxia in planning of radiation therapy for head and neck tumor: FAZA PET (A and C), CT (B), and PET/CT (D). In B, large primary tumor (yellow arrow) and retro-pharyngeal lymph node metastasis (red arrow) demonstrate heterogeneous 18F-FAZA uptake. In C, blue region of interest depicts highest radiopharmaceutical uptake whereas yellow region delineates lowest. Dotted red line in D outlines tumor anatomically, and solid red line shows tumor, with a tumor-to-muscle ratio of more than 1.5. (Adapted with permission of (114).)