[New application of ultrasound imaging using contrast agent].

Recently, various ultrasound contrast agent have been developed all over the world. This paper reviewed recent development of some contrast agent and clinical application of new imaging using contrast agent (Enhanced color Doppler Imaging, Harmonic Imaging, Flash Echo Imaging and Loss of Correlation Imaging). These new methods are easily feasible with a clinical ultrasound diagnosis machine for evaluating further information, for example, slow or deeply located lesion's blood flow, furthermore tissue perfusion. Contrast enhanced ultrasound imaging such as Harmonic imaging is enable to evaluate tissue function.