Table 2.

Summary of Statistical Analysis^*

	P value
	ROI	PLD	ROI × PLD
Peak flow	<0.0001	<0.0001	0.39
Mean flow	<0.0001	<0.0001	0.32
Total flow	<0.0001	<0.0001	0.39
Time to peak	<0.0001	0.33	0.31
Peak width	0.045	0.80	0.85

^*Results of the two-way ANOVA with interaction effect analysis, which tested the dependence of the measured variables: peak flow, mean flow, total flow, time to peak, and peak width upon the region of interest (ROI) or muscle group, the postlabeling delay (PLD) and the interaction between these variables, ROI × PLD. P values are listed to indicate the significance level for the effect of the ROI, PLD, or their interaction upon the measured variables.