Fig 1. Schematics of the TH-based exchange model.
CAIF, blood concentration of AIF; ha, arterial transfer function; Ca, concentration of the arterial plasma input to the tissue; Fp, plasma flow per unit tissue volume; Cp, concentration in the tissue capillary plasma space; Ce, concentration in the extravascular space; vp, plasma volume in the tissue; ve, extravascular interstitial volume; PS, product of the permeability and the surface area between the compartments; xi, a position along the capillary.