PROBLEM TO BE SOLVED: To provide an ultrasonic image forming method for embodying an image by reducing the uncorrelation degree of an elastographic image signal to be changed by time or space.SOLUTION: The ultrasonic image forming method is the one for forming the image by reducing the uncorrelation degree between signals before/after compression through the use of an elastography, which is technique to measure the degree of stiffness in a tissue with a real-time ultrasonic medical image, so as to reduce a difference in delay time estimation. Especially, the method embodies the elastoraphic image by compensating the change of a center frequency to be changed by the depth of an object body and reducing the uncorrelation degree between the elastographic image signals for inducing a calculation error.COPYRIGHT: (C)2007,JPO&INPIT【課題】時間または空間によって変化する弾性映像信号の非相関度を減少させて映像を具現する超音波映像形成方法を提供する。【解決手段】リアルタイム超音波医療用映像で組織の硬さの程度を測定する技術である弾性映像法で圧縮前、圧縮後の信号間に非相関度を減少させて遅延時間推定の誤差を減らして映像を形成する方法を提供する。特に、対象体の深さによって変わる中心周波数の変化を補償し、計算誤差を誘発する弾性映像信号間の非相関度を減少させて弾性映像を具現する超音波映像形成方法を提供する。【選択図】図4
