@InProceedings{C.Santa-Marta2008, author="C. Santa-Marta and Jaume Garcia and A. Bajo and J.J. Vaquero and M. Ledesma-Carbayo and Debora Gil", editor="Roberto hornero, Saniel Abasolo", title="Influence of the Temporal Resolution on the Quantification of Displacement Fields in Cardiac Magnetic Resonance Tagged Images", booktitle="XXVI Congreso Anual de la Sociedad Espa{\~n}ola de Ingenieria Biomedica", year="2008", pages="352--353", abstract="It is difficult to acquire tagged cardiac MR images with a high temporal and spatial resolution using clinical MR scanners. However, if such images are used for quantifying scores based on motion, it is essential a resolution as high as possibl e. This paper explores the influence of the temporal resolution of a tagged series on the quantification of myocardial dynamic parameters. To such purpose we have designed a SPAMM (Spatial Modulation of Magnetization) sequence allowing acquisition of sequences at simple and double temporal resolution. Sequences are processed to compute myocardial motion by an automatic technique based on the tracking of the harmonic phase of tagged images (the Harmonic Phase Flow, HPF). The results have been compared to manual tracking of myocardial tags. The error in displacement fields for double resolution sequences reduces 17\%.", optnote="IAM;", optnote="exported from refbase (http://refbase.cvc.uab.es/show.php?record=1033), last updated on Wed, 22 Jan 2014 12:41:07 +0100" }