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Table 1 Dose constraints for the organs at risk

From: Correlation between the γ passing rates of IMRT plans and the volumes of air cavities and bony structures in head and neck cancer

OARs Constraints OARs Constraints
Brainstem Dmax<54Gy Spinal cord Dmax<40Gy
Optic chiasm Dmax<54Gy Optic nerves Dmax<54Gy
Pituitary Dmax<54Gy Eyes Dmean<25Gy
Temporal lobes V60<2cc Parotid glands Dmean<30Gy
Lens Dmax<12Gy Inner ears Dmean<35Gy
Oral cavity Dmean<38Gy Mandible V55<10%