Dense Multiscale Motion Extraction from Cardiac Cine MR Tagging using HARP Technology

We propose an operational method to extract the left ventricle (LV) systole dynamics using HARmonic Phase (HARP) images extracted from tagged cardiac MR sequences. Established techniques to generate HARP sequences provide independent evidence for motion extraction, in the sense that the combined linear system for scalar brightness conservation, applied to the HARP images, can be uniquely solved for a dense field of motion parameters without the need for regularization. In contrast to some of the previously proposed popular methods, no segmentation or tracking of tags over time, nor interpolation of a sparse motion field explicitly coupled to the tag pattern is required, and the problem of tag fading is bypassed. An important novelty is the incorporation of automatic local scale selection so as to obtain a robust solution, which not only yields a stable, but also a smoothly varying motion field of the (healthy) LV myocardial wall. The scheme relies on an integer parameter representi...

• Type: Conference
• Year: 2007
• Where: ICCV
• Authors: Luc Florack, Hans C. van Assen, Avan Suinesiaputra
• Keywords: Computer Vision, Dense field, ICCV 2007, Motion field, Smoothly Varying Motion