1. Agati L, Funaro S, Veneroso G, Volponi C, De Maio F, Madonna MP, Fedele F (2001) Non-invasive assessment of myocardial perfusion by intravenous contrast echocardiography: state of the art. Ital Heart J 2:403–437
2. Barnhart J, Levene H, Villapando E, et al (1990) Characteristics of Albunex, air-filled albumin microspheres for echocardiography. Invest Radiol 25:162–164
3. Basilico R, Blomley MJ, Harvey CJ, Filippone A, Heckemann RA, Eckersley RJ, Cosgrove DO. (2002) Which continuous US scanning mode is optimal for the detection of vascularity in liver lesions when enhanced with a second generation contrast agent? Eur J Radiol 41:184–191
4. Bauer A, Blomley M, Leen E, Cosgrove D, Schlief R (1999 ) Liver-specific imaging with SHU 563A: diagnostic potential of a new class of ultrasound contrast media. Eur Radiol 9 Suppl 3:S349–352
5. Bogdahn U, Holscher T, Rosin L, Gotz B, Schlachetzki F (1999) Contrast enhanced transcranial and extracranial duplex sonography: preliminary results of a multicenter phase II/III study with SonoVuetrade mark. Echocardiography 16:761–766