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Analytic signal phase-based myocardial motion estimation in tagged MRI sequences by a bilinear model and motion compensation

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Academic year: 2021

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Fig. 1. (a) Tagged MR image with 45° and 135° tagging lines. (b) Phase image φ 1 from analytic signal s 1 , contains 45° tagging lines structural information
Fig. 3. Displacement estimation between point N(x N , y N ) (star) on frame t and point N on frame t + 1: Firstly, the displacement of four neighbor blocks B1, B2, B3, B4 of Nˆ are estimated separately, the average motion vector of each block is used as it
Fig. 5. Box and whiskers plots of Eulerian endpoint errors for sequences (a) “256R20F20”, (b) “256D30F20”, (c) “160D30R20P3F34”
Fig. 7. Displacement and absolute value error map in pixels of sequence
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