Figure 3
From: Contrast timing optimization of a two-volume dynamic CT pulmonary perfusion technique
Two-volume FPA perfusion protocol. The integrated contrast enhancement change (\({\Delta \mathrm{M}}_{\mathrm{c}}/\Delta \mathrm{t}\)) within the lung compartment is measured by the tissue time attenuation curve (TAC, blue line). The average input concentration (\({\mathrm{C}}_{\mathrm{in}}\)) is estimated from the pulmonary arterial input function (AIF, black line) at V1 and V2. \({\mathrm{T}}_{\mathrm{p}}\) is the time-to-peak delay.
