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. Author manuscript; available in PMC: 2013 Feb 15.
Published in final edited form as: Neuroimage. 2011 Oct 21;59(4):3933–3940. doi: 10.1016/j.neuroimage.2011.10.054

Figure 2.

Figure 2

Results of the Monte Carlo simulations performed on the numerical volume shown in Fig. 1. (A) Simulation of a cortical activation with no pial vein washout (γHbR = 1 and γHbO = 1) to define the ROI and verify that PVCHbR = PVCHbT and PVCHbO = PVCHbT. (B) Simulation of a pial veins oxygenation increase of 6 % (60 to 66%) on top of a cortical activation. No volume changes were simulated in the pial veins (γHbT = 1). (C–D) Sensitivity analysis showing (C) the γHbR and (D) the γHbO values recovered by simulating an oxygenation increase of 5 to 10 %.