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US deformation techniques can roughly be divided in block matching (BM) and non-rigid image registration (NRIR). Motion can be extracted from the radio-frequency (RF) signals, from their envelope, or from the B-mode data. RF-based BM is known to outperform B-mode tracking in a small displacement setting, whereas NRIR has only been applied to B-mode data. The aim of this study was to test the feasibility...
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