Table 1: Dose parameters of organs at risk used for data analysis.

Organs at riskDose parameters for

Spinal cordMaximum dose ( )
HeartMean dose ( ),
Volume received 40 Gy or above ( )
Whole lung
(exclude PTV)
Mean dose ( ),
Volume received 20 Gy or above ( )
Volume received 10 Gy or above ( )
Volume received 5 Gy or above ( )
Ipsilateral lung
(exclude PTV)
Mean dose ( )
Volume received 20 Gy or above ( )
Contralateral lungMean dose ( )
Volume received 20 Gy or above ( )