Preservation of swallowing in resected oral cavity squamous cell carcinoma: examining radiation volume effects (PRESERVE): study protocol for a randomized phase II trial

Table 1 Radiation treatment volumes and doses

PTV Volume	CTV Volumes Included		Dose in 30 fractions
PTV Volume	Arm 1	Arm 2	Dose in 30 fractions
PTV64 Areas of positive margin or ENE	CTV64	CTV64	64 Gy
PTV60 Dissected neck	CTVp60 CTVn60pos CTVn60neg	CTVp60 CTVn60pos	60 Gy
PTV54 (optional) Not surgically dissected elective nodal regions	CTVn54pos CTVn54neg	CTVn54pos	54 Gy

ISSN: 1748-717X