PT - JOURNAL ARTICLE AU - Esther G.C. Troost AU - Dominic A.X. Schinagl AU - Johan Bussink AU - Otto C. Boerman AU - Albert J. van der Kogel AU - Wim J.G. Oyen AU - Johannes H.A.M. Kaanders TI - Innovations in Radiotherapy Planning of Head and Neck Cancers: Role of PET AID - 10.2967/jnumed.108.061499 DP - 2010 Jan 01 TA - Journal of Nuclear Medicine PG - 66--76 VI - 51 IP - 1 4099 - http://jnm.snmjournals.org/content/51/1/66.short 4100 - http://jnm.snmjournals.org/content/51/1/66.full SO - J Nucl Med2010 Jan 01; 51 AB - Modern radiotherapy techniques heavily rely on high-quality medical imaging. PET provides biologic information about the tumor, complementary to anatomic imaging. Integrated PET/CT has found its way into the practice of radiation oncology, and 18F-FDG PET is being introduced for radiotherapy planning. The functional information possibly augments accurate delineation and treatment of the tumor and its extensions while reducing the dose to surrounding healthy tissues. In addition to 18F-FDG, other PET tracers are available for imaging specific biologic tumor characteristics determining radiation resistance. For head and neck cancer, the potential gains of PET are increasingly being recognized. This review describes the current role of PET and perspectives on its future use for selection and delineation of radiotherapy target volumes and for biologic characterization of this tumor entity. Furthermore, the potential role of PET for early response monitoring, treatment modification, and patient selection is addressed in this review.