Radiation techniques can vary and guidelines can be found in the NCCN Clinical Practice Guidelines for H&N cancer.
A copy of the 2009 guidelines can be found on the OCF site at
http://www.oralcancerfoundation.org/treatment/pdf/head-and-neck.pdfAn updated 2010 copy can be found on the NCCN site (google NCCN Guidelines).
Conventional fractionation for concurrent chemo-radiation is 70gy to the primary tumor/tumor-bed and involved nodes in 2.0gy daily fractions and 44-64gy to the uninvolved nodes that may be known drainage nodes for the primary, or are located nearby (and/or suspect occult area) in 1.6-2.0gy daily fractions.
OCF will have the new 2010 guidelines up on thee links by Monday. We just received the 2010 changes from NCCN who we have a formal agreement with. BH