Table 3.
MRI parameters before and after RT.
| Baseline MRI | First post-RT MRI | P value | |
|---|---|---|---|
| ADC (× 10–3 mm2/s) | 0.67 (0.61–0.72) | 0.75 (0.63–1.43) | 0.027 |
| Ktrans (× 10–3/min) | 135.38 (43.51–346.04) | 100.08 (38.62–257.49) | 0.106 |
| kep (× 10–3/min) | 836.33 (301.41–1082.32) | 335.80 (21.86–741.87) | 0.002 |
| ve (× 10–3) | 161.54 (128.38–410.13) | 273.99 (181.39–1216.95) | 0.027 |
| vp (× 10–3) | 4.93 (0.38–24.52) | 2.86 (0.21–33.35) | 0.625 |
| Volume (cm3) | 9.90 (0.80–65.93) | 10.40 (1.01–60.93) | 0.770 |
Numbers are medians and ranges in parentheses.
MRI, magnetic resonance imaging; ADC, apparent diffusion coefficient; Ktrans, volume transfer constant; kep, rate constant; RT, radiation therapy; ve, volume fraction of the extravascular extracellular matrix; vp, blood plasma volume.