Table 1. Quantitative comparisons of perfusion parameters among abscesses, glioblastomas and metastases.

Region	Parameter	Abscess	GB	Mets	Abscess vs. GB	Abscess vs. Mets	GB vs. Mets
Enhancing rim	K2	1.33±1.29	0.92±0.79	1.22±1.45	0.508	0.968	0.706
	CBV	1.45±1.17	3.85±2.19	2.39±0.90	0.001*	0.030*	0.034*
	Corrected CBV	1.97±1.01	4.39±2.33	2.97±0.78	0.001*	0.007*	0.048*
Perifocal edema	K2	0.28±0.27	0.14±0.16	0.11±0.10	0.198	0.072	0.786
	CBV	1.04±0.43	1.54±1.21	0.88±0.33	0.242	0.432	0.082
	Corrected CBV	1.21±0.40	1.62±1.24	0.90±0.35	0.380	0.053	0.063

Note. – Data are mean ± standard deviation; CBV and corrected CBV are in ratios to corresponding NAWM, GB, glioblastomas; Mets, metastasis; *p<0.05.