Conversion and validation of rectal constraints for prostate carcinoma receiving hypofractionated carbon-ion radiotherapy with a local effect model

Table 3 CNAO LEM rectum constraints for 12-, 8-, and 4-fraction CIRT converted based on two strategies

^dD_LEM16fx	^eD_MKM 16fx	^aD_LEM 12fx			^bD_LEM 8fx			^cD_LEM 4fx
^dD_LEM16fx	^eD_MKM 16fx	^fMKM LQ	^gLEM LQ	^hDiff	MKM LQ	LEM LQ	Diff	MKM LQ	LEM LQ	Diff
D_10cc ≤ 54.00	39.99	45.97	49.14	6.90%	36.53	42.59	16.58%	23.94	32.60	36.19%
D_5cc ≤ 61.00	49.84	51.70	55.30	6.96%	40.73	47.70	17.12%	26.62	36.28	36.30%
D_1cc ≤ 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%

ISSN: 1748-717X