Sparing the contralateral submandibular gland without compromising PTV coverage by using volumetric modulated arc therapy

Table 2 Planning objectives/constraint set

Target Volume	min dose (Gy)	max dose (Gy)	priority
PTV elective (1.65 Gy/fr)	57	58.5	120-130
PTV elective (1.55 Gy/fr)	53.5	55	120-130
PTV boost	69	71	120-130
spinal cord		36	125
standard ring	DVH		90-110
parotids	DVH, adapt during first iterations		80
CLSM	DVH, adapt during first iterations		80
Shoulders		20	75

ISSN: 1748-717X