Characterization of focal hepatic lesions with contrast-enhanced C-cube gray scale ultrasonography

Figure 4 A 45-year-old female with hemangioma. A. Intercostal section of precontrast conventional sonography exhibits a hypoechogenic lesion (arrows) of 6.5 cm in diameter. B. Contrast-enhanced C-cube gray scale sonography at 23 s (B) after injection of Levovist shows that no microbubble signal appears in the lesion while enhancement in the liver parenchyma begins. C-F. C-cube gray scale sonography demonstrates gradual peripheral enhancement at 32 s (C), 47 s (D), 113 s (E) and 370 s (F) with a long enhancement duration.