Figure 4

Liver metastasis of a colorectal carcinoma exhibiting a central necrosis. (A) A representative sagittal slice of uptake and the corresponding parametric images of (B) K _s , (C) $K_s^{\left(c\right)}$, and (D) K _m , respectively, are shown. The means of the rate constants over the lesion are as follows: K _s  = 2.23 ml/min/100 ml, $K_s^{\left(c\right)}=2.80$ ml/min/100 ml, and K _m  = 2.90 ml/min/100 ml, demonstrating a quite satisfactory quantitative agreement between $K_s^{\left(c\right)}$ and K _m .