Agreement of Imaging Procedures with the Standard of Reference
| Modality | Time of imaging after therapy (mo) | κ value | P value of κ |
|---|---|---|---|
| CT (WHO) | 1 | 0.151 | NS |
| 3 | 0.310 | NS | |
| 6 | 0.222 | NS | |
| CT (RECIST) | 1 | 0.108 | NS |
| 3 | 0.310 | NS | |
| 6 | 0.222 | NS | |
| PET | 1 | 0.348 | 0.04 |
| 3 | 1.0 | 0.001 | |
| 6 | 1.0 | 0.005 | |
| CT and PET side by side | 1 | 0.615 | 0.003 |
| 3 | 1.0 | 0.001 | |
| 6 | 1.0 | 0.005 | |
| PET/CT | 1 | 0.828 | <0.001 |
| 3 | 1.0 | 0.001 | |
| 6 | 1.0 | 0.005 |
Data are based on comparison of the different imaging procedures with the standard of reference. Statistical significance of the agreement between the different imaging procedures and the standard of reference were demonstrated with P values. P < 0.05 was considered to be statistically significant.
NS = not significant.