Title :
Improved Harmonic Phase (HARP) Method for Motion Tracking a Tagged Cardiac MR images
Author :
Khalifa, Ayman M. ; Youssef, Abou Bakr M ; Osman, Nael F.
Author_Institution :
Dept. of Biomed. Eng., Cairo Univ.
Abstract :
The diagnosis of cardiovascular disease requires precise assessment of both morphology and function of the heart. Currently, magnetic resonance imaging (MRI) provides a useful tool for accurate and reproducible assessment of regional function of the left ventricle noninvasively. MR tagging produces images of the heart that can be analyzed using harmonic phase (HARP) method to describe the regional function of the heart. In order to calculate regional function, a circular mesh is manually built at a specific timeframe, after which the points of such mesh are tracked using the HARP technique. The tracking is not perfect and some individual points on the mesh could fail in tracking. In this work, a new method is presented to improve the tracking by combining HARP with active contour methods. This modified HARP technique is more robust than the previous HARP technique
Keywords :
biomedical MRI; cardiovascular system; diseases; image motion analysis; medical image processing; mesh generation; active contour methods; cardiovascular disease diagnosis; circular mesh; harmonic phase method; heart morphology; left ventricle; magnetic resonance imaging; motion tracking; regional heart function; tagged cardiac MR images; Active contours; Cardiovascular diseases; Harmonic analysis; Heart; Image analysis; Magnetic analysis; Magnetic resonance imaging; Morphology; Tagging; Tracking; Active Contour Model; MR tagging; Motion Tracking;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615415
