Effect of fractional blood volume on modeling with data from the cortex. (A) Effect on goodness of fit (χ2). Original data were more sensitive to unrealistically high v
b in the model. (B) Averaged CMRglc was increased by about 10% when v
b was assumed to be zero. Thin lines are drawn one average standard deviation of the experimental data (n = 5 animals) above and below the average data curve.