PT Unknown
AU Jaume Garcia
   Debora Gil
   A.Bajo
   M.J.Ledesma-Carbayo
   C.SantaMarta
TI Influence of the temporal resolution on the quantification of displacement fields in cardiac magnetic resonance tagged images
BT Proc. Computers in Cardiology
PY 2008
BP 785
EP 788
VL 35
DI 10.1109/CIC.2008.4749159
AB 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 possible. 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%.
ER