Direct ultrasonic holography: Feasibility demo

Abstract

Holography is potentially the most powerful method for high spatial resolution real time 3D ultrasound imaging and diagnostics. Although versions of ultrasound holography have existed since the 1970s, they use laser reconstruction, thus losing 3-D resolution. By using transmissive ultrasound with a scanning needle hydrophone, full 3D holographic imaging is proved to be possible, if both amplitude and time delay phase information can be obtained. © 2005 Acoustical Society of America.