【摘 要】
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Background,Motivation and Objective Tissue motion estimation is widely used in many ultrasound techniques.Rigid model-based and non-rigid model-based methods are the two main groups of space-domain me
【机 构】
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Department of Biomedical Engineering,Tsinghua University,Beijing,China
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Background,Motivation and Objective Tissue motion estimation is widely used in many ultrasound techniques.Rigid model-based and non-rigid model-based methods are the two main groups of space-domain methods of tissue motion estimation.Affine model is one of the commonly used non-rigid models.The performances of the rigid model and affine model have not been compared on ultrasound radio-frequency(RF) signals,which obtain higher accuracy,precision and resolution compared with B-mode images.In this study,three methods,i.e.,the normalized cross-correlation method with rigid model(NCC),the optical flow method with rigid model(OFRM) and optical flow method with affine model(OFAM) are compared using ultrasound RF signals.
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