Fig. 4From: Permeability of the windows of the brain: feasibility of dynamic contrast-enhanced MRI of the circumventricular organsExample of time-concentration curves with good model fits obtained in a secretory (median eminence (ME)) and a sensory (organum vasculosum of the lamina terminalis (OVLT)) circumventricular organ using the extended Tofts model. Note the higher temporal sampling for 1.5 min during the initial steep concentration changes and the slower sampling before and after this periodBack to article page