Liver reserve function assessment by acoustic radiation force impulse imaging

Figure 1 Patient with normal liver reserve function. The Vs value was 1.07 m/s, ICG-R15 was 5.13% and ICG-K was 0.24 L/min. ICG: Indocyanine green.

Figure 2 Patient with poor liver reserve function. The Vs value was 1.75 m/s, ICG-R15 was 16.83% and ICG-K was 0.08 L/min. ICG: Indocyanine green.

Figure 3 Correlations between liver stiffness and indocyanine green-R15 (A) or indocyanine-K (B) levels are shown. LS: Liver stiffness.

Figure 4 Receiver-operator characteristic curve used to analyze liver reserve function assessment accuracy. When the liver stiffness value was 2.34 m/s, the Youden index was at its highest point, sensitivity was 69.2% and specificity was 92.1%.