Table 3.

The CBF values of sub-volume before radiotherapy (ml/100 g/min).

	High-perfusion area			Edema area	Normal gray matter
	CBFmax	CBFmin	CBFmean	CBFmean	CBFmean
Absolute values	89.25 ± 39.50	42.33 ± 11.79	66.98 ± 18.03	35.19 ± 7.75	33.92 ± 8.48
Relative values	2.61 ± 0.64	1.34 ± 0.53	2.03 ± 0.53	1.08 ± 0.32	–

CBF_max/CBF_min/CBF_mean represent the maximum, minimum, and average value of cerebral blood flow (CBF), respectively. Relative values are the CBF values of high-perfusion and edema area normalized by that of normal gray matter.