Table 2.
Volumetric comparison of computed tomography vs. PET/MRI GTVs.
| Primary tumor volume (cc) |
Nodal tumor volume (cc) |
|||||||
|---|---|---|---|---|---|---|---|---|
| Pt. | GTV-CT | GTV-PET/MRI | Intersection | DSC | GTV-CT | GTV-PET/MRI | Intersection | DSC |
| 1 | 23.6 | 22.1 | 12.2 | 0.53 | – | – | – | – |
| 2 | – | – | – | – | 19.1 | 20.4 | 15.0 | 0.76 |
| 3 | – | – | – | – | 12.0 | 17.4 | 9.9 | 0.67 |
| 4 | 3.9 | 7.3 | 3.1 | 0.55 | 10.3 | 8.6 | 4.5 | 0.48 |
| 5 | 15.0 | 14.1 | 10.9 | 0.75 | – | – | – | – |
| 6 | 22.1 | 28.1 | 17.5 | 0.70 | 25.7 | 23.9 | 18.5 | 0.75 |
| 7 | 19.6 | 28.8 | 15.7 | 0.65 | 4.6 | 4.3 | 3.1 | 0.70 |
| 8 | 6.4 | 6.3 | 4.6 | 0.72 | 50.2 | 77.1 | 44.1 | 0.69 |
| 9 | 7.8 | 8.3 | 5.0 | 0.62 | – | – | – | – |
| 10 | 10.8 | 9.5 | 6.9 | 0.68 | – | – | – | – |
| 11 | 10.0 | 4.1 | 2.8 | 0.40 | 11.5 | 9.4 | 5.7 | 0.55 |
| Mean (SD) | 13.2 | 14.3 | 8.7 | 0.63 (0.11) | 19.0 | 23.0 | 14.4 | 0.69 (0.10) |
GTV, gross tumor volume; DSC, dice similarity coefficient.