TABLE 1

Texture Analysis of Whole-Brain–Segmented 18F-FDG PET Datasets

Texture featureP
Angular second moment0.100
Contrast0.043
Correlation0.992
Sum of squares: variance0.035
Inverse difference moment0.168
Sum average0.963
Sum variance0.042
Sum entropy0.396
Entropy0.229
Difference variance0.233
Difference entropy0.039
Information on measurement of correlation 10.239
Information on measurement of correlation 20.247

  • P values refer to probability of statistically significant difference in each texture feature, when comparing pre- and post-PCI image sets.