Fig. 5

Regression models between EQD₂ total lung MLD and volume ratio_{(LN to total lung)} combined with volume ratio_{(PT to total lung)} for C&S and C&SIB plans (a, b); regression models between EQD₂ total lung MLD and corrected volume ratio_{(LN to total lung)} combined with volume ratio_{(PT to total lung)} for C&S and C&SIB plans (c, d). Z: EQD₂ total lung MLD; X: volume ratio_{(LN to total lung)} (a, b), and corrected volume ratio_{(LN to total lung)}(c, d); Y: volume ratio_{(PT to total lung)}