Evaluating the efficacy of percutaneous puncture biopsy guided by contrast-enhanced ultrasound for peripheral pulmonary lesions

Figure 1 Contrast-enhanced ultrasound examination imaging observation. A: Large peripheral focal lesion in the right lung (indicated by arrows); B: Contrast-enhanced ultrasound (CEUS) reveals a nonenhanced necrotic area within the peripheral focus (indicated by arrows); C: Puncture needle angle demonstrating avoidance of the nonenhanced necrotic area, as shown by CEUS, and targeting of the region with enhanced activity (indicated by arrows); D: Focal lesions in the posterior basal segment of the right lower lung on computed tomography (indicated by arrows).