Table 3.

CNAO LEM rectum constraints for 12-, 8-, and 4-fraction CIRT converted based on two strategies

dDLEM16fx	eDMKM 16fx	aDLEM 12fx			bDLEM 8fx			cDLEM 4fx
		fMKM LQ	gLEM LQ	hDiff	MKM LQ	LEM LQ	Diff	MKM LQ	LEM LQ	Diff
D10cc ≤ 54.00	39.99	45.97	49.14	6.90%	36.53	42.59	16.58%	23.94	32.60	36.19%
D5cc ≤ 61.00	49.84	51.70	55.30	6.96%	40.73	47.70	17.12%	26.62	36.28	36.30%
D1cc ≤ 66.00	57.31	55.97	59.69	6.65%	43.97	51.33	16.75%	28.67	38.88	35.59%

^aThe LEM rectum constraints for 12-fraction CIRT [Gy (RBE)]

^bThe LEM rectum constraints for 8-fraction CIRT [Gy (RBE)]

^cThe LEM rectum constraints for 4-fraction CIRT [Gy (RBE)]

^dThe CNAO rectum constraints for 16-fraction CIRT of absolute volumes [Gy (RBE)]

^eThe MKM constraints which were backward converted from CNAO rectum constraints based on our RBE-conversion model [Gy (RBE)]

^fThe LEM rectum constraints converted from CNAO constraints by MKM LQ strategy

^gThe LEM rectum constraints converted from LEM LQ strategy

^hDifference = (LEM LQ-MKM LQ)/MKM LQ*100%