Benchmarking techniques for stereotactic body radiotherapy for early-stage glottic laryngeal cancer: LINAC-based non-coplanar VMAT vs. Cyberknife planning

Table 1 Planning constraints/objectives for the PTV and OARs. The maximum dose is the point maximum dose defined to 0.035 cc

Structure/Organ	Evaluation	Goal	Unit
PTV	V_Rx	>= 95%	V%
	D_max	<= 48.9	Gy
	D_max	<= 51.0 (required)	Gy
	Conformity index	<= 1.3 (required)	N.A.
Left/Right Carotid Artery	D_max	<= 23.0	Gy
Left/Right Carotid Artery	D_mean	<= 11.2	Gy
Spinal Cord	D_max	<= 20.0 (required)	Gy
Skin	D_max	<= 42.5	Gy
Contralateral Arytenoid	D_max	<= 23.0	Gy
Thyroid Gland	D_mean	<= 15.3	Gy

All the doses shown here are recommended objectives (not required), except where specifically noted

ISSN: 1748-717X