[Assessment of myocardial perfusion with second harmonic imaging--using intravenous injection of Albunex and Levovist].

: The objection of this study was to determine whether a method of harmonic imaging could improve the myocardial contrast after injection of Albunex and Levovist. Two dogs were imaged harmonic mode from transdiaphragm approach (transmit at 2.5 MHz and received at 5.0 MHz). Albunex (0.22 ml/kg) and Levovist (400 mg/ml x 2 ml) was injected intravenously for each dog. Venous injection of Albunex coupled with harmonic imaging produced only coronary flow. Venous injection of Levovist coupled with harmonic imaging produced myocardial opacification. It is possible that venous injection of Levovist coupled with harmonic imaging method will also useful in studying myocardial perfusion.