A new ultrasonic holographic imaging method, UHB imaging has been developed. This method is based on the combination of the holographic principle and conventional B-scan technique. This combining has been achieved using computerized numerical image reconstruction based on wavefront backward propagation. An important feature of this reconstruction process is a wavefront curvature compensation which leads to optimal lateral and longitudinal resolution. The theory of UHB imaging has been verified firstly by simulated UHB imaging in a computer and secondly by constructing an UHB apparatus and producing experimental UHB images of a resolution test object and human brain specimens.
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