Table 1 Targets, organs at risk and objectives used for plan optimization
Institution A | Institution B | |
|---|---|---|
Prescription | ||
70 Gy, 60 Gy and 54 Gy | 70 Gy and 54 Gy | |
35 fractions with a simultaneous integrated boost | ||
Beam arrangement | ||
2 volumetric modulated arcs, 6MV photons | ||
PTVs | ||
PTV 70Gy Dmean = 70Gy | PTV 70Gy D95% = 98% | |
PTV 70Gy V95% > 95% | PTV 70Gy V107% < 5% | |
PTV 70Gy D2% > 75Gy | PTV 54Gy D95% > 98% | |
PTV 60Gy V95% > 95% | PTV 54Gy V107% < 5% | |
PTV 54Gy V95% > 95% | ||
Serial organs | ||
Brainstem Dmax < 54 Gy | Brainstem + 3 mm Dmax < 50 Gy | |
Brachial Plexus D0.5cm3 < 60 Gy | ||
Mandible V70 Gy < 1 cm3 | Mandible Dmax < 70 Gy | |
Spinal cord < 45 Gy | Spinal cord + 3 mm Dmax < 54 Gy | |
Parallel organs | ||
UAT | Cricopharyngeal | |
Glottis | ||
Larynx Lower | ||
Larynx Upper | ||
Pharynx constrictor | ||
Superior PCM | ||
Medial PCM | ||
Inferior PCM | ||
Upper esophagus | Upper esophagus | |
Upper Esophageal Sphincter | ||
Thyroid | Thyroid | |
Trachea | Trachea | |
Oral cavity | Oral cavity | |
Parotids | Parotids | |
Submandibular glands | Submandibular glands | |