Target Volume Determination 2015

Can we improve the results of elective neck irradiation?

Dysphagia-sparing IMRT

• Omitting medial retropharyngeal lymph nodes from the CTV of elective neck. • The PTV1 of elective neck: 35 x 1.8 Gy/63 Gy. • The PTV2 of elective neck: 35 x 1.7 Gy/59.5 Gy.

Feng et al. IJROBP 2007;28:2732-8. Feng et al. JClin Oncol 2010;28:2732-8.