Table 5.
Spearman correlation coefficient for each couple of imaging parameters
| ΔCT maximum diameter (%) | ΔHU (%) | ΔMR maximum diameter (%) | ΔWash-in (%) | ΔWash-out (%) | ΔDt (%) | Δfp (%) | ΔDp (%) | ΔSUVmax | ||
| ΔCT maximum diameter (%) | Correlation coefficient | 1.000 | -0.183 | 0.227 | 0.418 | 0.655a | -0.273 | 0.364 | -0.036 | -0.127 |
| P value | 0.468 | 0.502 | 0.201 | 0.029 | 0.417 | 0.272 | 0.915 | 0.726 | ||
| n | 18 | 18 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | |
| ΔHU (%) | Correlation coefficient | -0.183 | 1.000 | 0.027 | -0.373 | -0.373 | 0.318 | -0.291 | 0.064 | 0.758a |
| P value | 0.468 | 0.937 | 0.259 | 0.259 | 0.340 | 0.385 | 0.853 | 0.011 | ||
| n | 18 | 18 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | |
| ΔMR maximum diameter (%) | Correlation coefficient | 0.227 | 0.027 | 1.000 | -0.345 | -0.082 | -0.036 | -0.409 | -0.391 | 0.183 |
| P value | 0.502 | 0.937 | 0.298 | 0.811 | 0.915 | 0.212 | 0.235 | 0.637 | ||
| n | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | |
| ΔWash-in (%) | Correlation coefficient | 0.418 | -0.373 | -0.345 | 1.000 | 0.527 | -0.436 | 0.318 | 0.209 | -0.150 |
| P value | 0.201 | 0.259 | 0.298 | 0.096 | 0.180 | 0.340 | 0.537 | 0.700 | ||
| n | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | |
| ΔWash-out (%) | Correlation coefficient | 0.655a | -0.373 | -0.082 | 0.527 | 1.000 | -0.264 | 0.709a | 0.291 | -0.383 |
| P value | 0.029 | 0.259 | 0.811 | 0.096 | 0.433 | 0.015 | 0.385 | 0.308 | ||
| n | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | |
| ΔDt (%) | Correlation coefficient | -0.273 | 0.318 | -0.036 | -0.436 | -0.264 | 1.000 | 0.118 | -0.164 | 0.417 |
| P value | 0.417 | 0.340 | 0.915 | 0.180 | 0.433 | 0.729 | 0.631 | 0.265 | ||
| n | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | |
| Δfp (%) | Correlation coefficient | 0.364 | -0.291 | -0.409 | 0.318 | 0.709a | 0.118 | 1.000 | 0.545 | -0.400 |
| P value | 0.272 | 0.385 | 0.212 | 0.340 | 0.015 | 0.729 | 0.083 | 0.286 | ||
| n | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | |
| ΔDp (%) | Correlation coefficient | -0.036 | 0.064 | -0.391 | 0.209 | 0.291 | -0.164 | 0.545 | 1.000 | -0.167 |
| P value | 0.915 | 0.853 | 0.235 | 0.537 | 0.385 | 0.631 | 0.083 | 0.668 | ||
| n | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | |
| ΔSUVmax | Correlation coefficient | -0.127 | 0.758a | 0.183 | -0.150 | -0.383 | 0.417 | -0.400 | -0.167 | 1.000 |
| P value | 0.726 | 0.011 | 0.637 | 0.700 | 0.308 | 0.265 | 0.286 | 0.668 | ||
| n | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | |
a
P < 0.05 was considered statistically significant. CT: Computed tomography; HU: Hounsfield unit; MR: Magnetic resonance; WIS: Wash-in slope; WOS: Wash-out slope; Dt: Diffusivity; fp: Perfusion fraction; SUVmax: Maximum standardized uptake value.