Table 2:

Comparison of (a) ARC, and (b) our model multi-IMPT for the lung case.

Structure	Quantity	Upper bound on BED (Gy)	ARC	multi-IMPT
CTV	CI	-	0.937	0.929
	${\text{D}}_{\text{max}}$	-	113.39%	109.31%
Lung	${\text{BED}}_{\text{mean}}$ (Gy)	25.2	6.24	6.97
	${\text{BED}}_{30}$ (Gy)	15.6	3.23	3.43
Heart	${\text{BED}}_{\text{mean}}$ (Gy)	-	2.28	2.54
Esophagus	${\text{BED}}_{\text{mean}}$ (Gy)	28.66	5.06	5.29