Table 4:

Correlation coefficient between normalized baseline- and ACZ-challenged CT perfusion parameters and angiographic stages in each vascular territory

Variable	BG^*	ACA^*	MCA^*	EBZ^*
Observer 1
CBV vs AS	0.39^†	0.29	0.29	0.69^†
CBF vs AS	−0.16	−0.24	−0.50^†	−0.33
MTT vs AS	0.47^†	0.39^†	0.52^†	0.68^†
PC of CBV vs AS	−0.36	0.11	−0.29	−0.19
PC of CBF vs AS	−0.65^†	−0.40^†	−0.81^†	−0.82^†
PC of MTT vs AS	0.25	0.32	0.33	0.48^†
Observer 2
CBV vs AS	0.37	0.26	0.31	0.67^†
CBF vs AS	−0.14	−0.27	−0.47^†	−0.31
MTT vs AS	0.46^†	0.38^†	0.53^†	0.64^†
PC of CBV vs AS	−0.33	0.14	−0.29	−0.19
PC of CBF vs AS	−0.69^†	−0.45^†	−0.83^†	−0.79^†
PC of MTT vs AS	0.28	0.34	0.31	0.49^†

Note:—CBV indicates normalized cerebral blood volume; CBF, normalized cerebral blood flow; MTT, normalized mean transit time; PC, percent change; AS, angiographic stage; BG, basal ganglia; ACA, anterior cerebral artery; MCA, middle cerebral artery; EBZ, anterior external border zone.
* Values are Pearson correlation coefficient (r).
† Values are statistically significant (P < .05).