Figure 3From: Preliminary comp arison of helical tomotherapy and mixed beams of unmodulated electrons and intensity modulated radiation therapy for treating superficial cancers of the parotid gland and nasal cavityDVHs for (a) patient 2 (parotid gland) and (b) patient 3 (nasal cavity) from helical tomotherapy, IMRT, and mixed beam (1:4 IMRT-electron weighting). Abbreviations: PTV = planning target volume; Cont. = contralateral; L. = left.Back to article page