Emerging roles for transthoracic ultrasonography in pulmonary diseases

Figure 19 Contrast-enhanced ultrasonography of bronchial carcinoma. A: Baseline scan shows a hypoechoic lesion with irregular borders (left side of the split-screen). Ten seconds after iv bolus of contrast agent, the pulmonary parenchyma near the lesion is already enhanced (arrows), whereas the lesions is still unenhanced (right side of the split-screen); B: Twenty seconds later, the lesion shows delayed inhomogeneous enhancement, which indicates a preferential bronchial arterial supply (right side of the split-screen).