Table 3.
Pairwise correlation between translational shifts based on fiducial to bony match and percentage of change in rectal volume as well as rectum center‐of‐mass (COM) position from simulation.
| LR | AP | SI | |
|---|---|---|---|
| ΔVolume (cc) | 0.119 (P = 0.149) | −0.273 a (P = 0.0006) | 0.193 a (P = 0.019) |
| ΔVolume (%) | 0.126 (P = 0.126) | −0.272 a (P = 0.0008) | 0.17 a (P = 0.039) |
| ΔCOM_x (mm) | 0.286 a (P = 0.0004) | −0.134 (P = 0.102) | 0.098 (P = 0.236) |
| ΔCOM_y (mm) | 0.035 (P = 0.670) | 0.648 c (P < 0.0001) | −0.466 b (P < 0.001) |
| ΔCOM_z (mm) | −0.015 (P = 0.85) | −0.275 (P = 0.0007) | 0.362 b (P < 0.0001) |
a
Weak correlation.
b
Moderate correlation.
c
Strong correlation.
s
Bold numbers are statistically significant.