Figure 5.

Model predictions of the sensitivity of the spatial variation in $R_2^{\ast }$ to changes in spiral artery blood flow and maternal oxygen saturation. Black points plot the measured data for lobule #8 from Figure 4, along with the model fit (red). The blue and green curves plot model predictions for changes in the spatial dependence of $R_2^{\ast }$ with a decrease in maternal SpO2 from 100% to 80% (blue) or a decrease of 40% in the spiral artery blood flow (green) to this lobule.