TABLE 2

Texture Analysis of Regionally Segmented Datasets

Texture feature	R frontal	R parietal	R temporal	L frontal	L parietal	L temporal
Angular second moment	0.292	0.212	0.173	0.449	0.176	0.335
Contrast	0.720	0.757	0.472	0.833	0.637	0.763
Correlation	0.821	0.232	0.557	0.984	0.609	0.989
Sum of squares: variance	0.651	0.630	0.483	0.850	0.384	0.740
Inverse difference moment	0.214	0.400	0.430	0.922	0.332	0.328
Sum average	0.133	0.010	0.892	0.221	0.047	0.501
Sum variance	0.618	0.416	0.557	0.884	0.351	0.760
Sum entropy	0.478	0.205	0.576	0.846	0.744	0.296
Entropy	0.322	0.272	0.197	0.451	0.145	0.254
Difference variance	0.286	0.238	0.842	0.852	0.550	0.351
Difference entropy	0.452	0.437	0.790	0.953	0.785	0.574
Information on measurement of correlation 1	0.465	0.448	0.790	0.478	0.138	0.409
Information on measurement of correlation 2	0.921	0.980	0.061	0.497	0.034	0.109

Values refer to probability of statistically significant difference in each texture feature (P value), when comparing pre- and post-PCI image sets.