Table III.
Volume, conformity index and dCOM of the tumor bed delineations.
| Parameter | Median | Range | P-valuea |
|---|---|---|---|
| Volume, cm3 | |||
| CT | 22 | 4–934 | |
| CT + postoperative MRI | 28 | 3–964 | <0.001 |
| CT + preoperative CT | 26 | 6–933 | <0.001 |
| CT + preoperative MRI | 25 | 7–933 | <0.001 |
| Conformity index | |||
| CT | 0.57 | 0.00–0.90 | |
| CT + postoperative MRI | 0.61 | 0.00–0.89 | 0.176 |
| CT + preoperative CT | 0.58 | 0.00–0.90 | <0.001 |
| CT + preoperative MRI | 0.59 | 0.00–0.89 | <0.001 |
| dCOM, mm | |||
| CT | 5.11 | 0–53 | |
| CT + postoperative MRI | 3.72 | 0–52 | 0.110 |
| CT + preoperative CT | 4.69 | 1–42 | 0.004 |
| CT + preoperative MRI | 4.56 | 0–48 | 0.001 |
a
P-value refers to differences in the median values obtained using an additional imaging modality compared with the standard postoperative CT. CT, computed tomography; MRI, magnetic resonance imaging; dCOM, distance between centers of mass.