【摘 要】
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Background, Motivation and Objective Estimating the motion of tissue in ultrasound is of paramount importance to elasticity imaging. There are a number of estimators available to estimate the local ax
【机 构】
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Biomedical Engineering, Duke University, Durham, North Carolina, USA
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Background, Motivation and Objective Estimating the motion of tissue in ultrasound is of paramount importance to elasticity imaging. There are a number of estimators available to estimate the local axial displacement between two ultrasound A-lines, which use phase or pattern matching methods, including normalized cross-correlation. When estimating the motion through an M-mode, two reference schema are typically used: anchored, where the motion between the first frame and every other frame are estimated directly, and progressive, where the motion between each sequential pair of frames is estimated and summed to provide the total displacement. Anchored referencing fails in the presence of decorrelation due to motion, while progressive estimation is prone to error accumulation. We demonstrate here a multiresolution method which uses all combinations of frames to form a single, robust estimate.
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