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. Author manuscript; available in PMC: 2013 Aug 6.
Published in final edited form as: Semin Radiat Oncol. 2009 Jan;19(1):43–52. doi: 10.1016/j.semradonc.2008.09.008

Fig. 3.

Fig. 3

Whole-neck IMRT in a case of oropharyngeal cancer with level III–IV lymph node metastases. Ipsilateral level VI (pre-laryngeal nodes) is at risk, and is encompassed within the CTV while partially sparing the glottis. Such sparing would not be safely done using split-neck IMRT.