Table 1.

Changes in tumor volumes and MRI parameters postradiation vs preradiation

Parameter	Dose, Gy	Day 3, %	Day 6, %	Day 9, %
Tumor volume	40	81.9**	102.6***	91.1**
	20	87.5*	113.1**	141.0**
	0	112.3***
ADC	40	2.0	9.3*	29.9***
	20	4.0	10.1**	12.0**
	0	2.3
Blood flow	40	−43.1***	−52.8***	−56.1**
	20	−44.1**	−48.3*	−73.0***
	0	−42.3**
APTw	40	−33.9**	−68.2***	−60.8***
	20	−33.1	−25.3	−67.5**
	0	−28.8

Positive values indicate increasing values, and negative values indicate decreasing values. The statistical significance of the difference compared with preradiation was taken from Figs. 1 and 6: *P < .05, **P < .01, ***P < .001, not marked = not significant.