Table 6.

Thoracic Dice Similarity Coefficients (DSC) between the individual organ contours drawn on a respiratory phase (0% and 50%) and those propagated form the deformably registered different phase. Results are presented for both registration directions

Case	16		17		18		Ave	1SD
ROI	DSC 0→50	DSC 50→0	DSC 0→50	DSC 50→0	DSC 0→50	DSC 50→0
Aorta	0.91	0.93	0.92	0.92	0.93	0.93	0.92	0.01
Esophagus	0.81	0.82	0.80	0.79	0.85	0.85	0.82	0.03
Heart	0.93	0.94	0.92	0.93	0.95	0.95	0.94	0.01
Lung_L	0.99	0.99	0.96	0.97	0.98	0.98	0.98	0.01
Lung_R	0.99	0.98	0.98	0.98	0.99	0.99	0.99	0.01
Spleen	0.92	0.94	0.93	0.95	0.96	0.96	0.94	0.02
Sternum	0.90	0.90	0.89	0.89	0.91	0.91	0.90	0.01
Stomach	0.87	0.90	0.94	0.93	0.79	0.79	0.87	0.07
Trachea	0.87	0.89	0.91	0.93	0.93	0.93	0.91	0.03