Comparison of the Value of Conventional Ultrasound and Contrast-Enhanced Ultrasound-Guided Puncture Biopsy in Different Sizes of Peripheral Pulmonary Lesions

Table 2

Related indicators of biopsy for the <30 mm group.

Group	Success rate of single puncture	Success rate of puncture	Needle bleeding rate	Pneumothorax rate
Conventional ultrasound group	77.8% (14/18)	83.3% (15/18)	27.8% (5/18)	27.8% (5/18)
Contrast-enhanced ultrasound group	80.0% (16/20)	90.0% (18/20)	25.0% (5/20)	20.0% (4/20)
X^2 value/t value	0.027	0.016	0.037	0.309
value	0.869	0.899	0.848	0.578