Table 6: Complication rate and puncture attempts in CEUS group and US group.

GroupComplication, % ()Puncture attempts

CEUS 2.4%
(2/82)
2.5 ± 0.7
US 3.3%
(2/60)
2.6 ± 0.6

value1.0000.462

Values are mean ± SD where applicable. CEUS, contrast enhanced ultrasound; US, ultrasound.