Technical Advances and Pitfalls in Head and Neck Radiotherapy
Figure 2
Typical beam arrangement applied for treating HNSCC of oropharynx with HRT on left using opposed lateral beams treating the primary site and upper cervical nodal regions compared with multiple beam angle arrangements employed for IMRT on right. The opposed beams do not treat through the oral cavity or the posterior scalp, and hence mucositis, is not seen in the lips and anterior oral cavity. With IMRT mucositis may be seen in the lips as well as hair loss which is observed in the posterior scalp.
