“…A new contrast agent, the Perflubutane, has recently introduced in Japan, with the result of more detailed CEUS imaging compared to the conventional contrast agents currently in use in Europe. The Perflubutane CEUS seems to show real-time images more detailed compared to the CT or MRI images (13). The typical CT pattern is a hypodense, well bound lesion, showing peripheral enhancement during the arterial phase of the contrast injection and a progressive centripetal filling in the late phases.…”