Table 3 Comparison among both 3D dosimetry methods (LDM and DPK) in terms of D5, D25, D50, D70, and D95 delivered to target normal liver, whole normal liver, and individual tumors: Bland Altman analysis and Lin concordance coefficients
Bland-Altman | Correlation and concordance coefficients | ||||
|---|---|---|---|---|---|
∆D (Gy) | Bias [95%CI] (Gy) | Points beyond ± 2 SD (%) | ρ | ρc | |
Target normal liver | |||||
D5 | 0.3 | − 0.9; 0.4 | 7.1 | 0.999 | 0.999 |
D25 | − 0.2 | − 0.8; 0.4 | 7.1 | 1.000 | 1.000 |
D50 | 0.2 | − 0.8; 1.1 | 0.0 | 1.000 | 1.000 |
D70 | 0.4 | − 1.0; 1.9 | 0.0 | 1.000 | 0.999 |
D95 | 2.3 | 0.0; 5.9 | 7.1 | 1.000 | 0.996 |
Whole normal liver | |||||
D5 | 0.1 | − 0.4; 0.3 | 7.1 | 0.999 | 0.998 |
D25 | − 0.1 | − 0.5; 0.2 | 7.1 | 1.000 | 1.000 |
D50 | − 0.1 | − 0.9; 0.7 | 7.1 | 1.000 | 1.000 |
D70 | 0.1 | − 1.2; 1.3 | 0.0 | 1.000 | 1.000 |
D95 | 2.5 | 0.1; 4.9 | 7.1 | 1.000 | 0.996 |
Individual tumors | |||||
D5 | − 0.3 | − 1.6; 1.0 | 5.0 | 0.999 | 0.999 |
D25 | − 0.1 | − 1.7; 1.8 | 4.0 | 0.999 | 0.999 |
D50 | 0.4 | − 1.7; 2.5 | 6.0 | 1.000 | 0.999 |
D70 | 1.1 | − 2.3; 4.5 | 4.0 | 1.000 | 0.999 |
D95 | 3.1 | − 9.0; 15.2 | 2.0 | 0.999 | 0.995 |