Constance G.F. Gatefait1, Kirsten M. Kerkering1, Sebastian Schmitter1, and Christoph Kolbitsch1
1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
We
successfully developed a motion corrected cardiac MRF framework where non-rigid
cardiac motion is corrected during iterative image reconstruction.
Figure 3: Resulting
T1 and T2 maps from the reference sequences (MOLLI and T2-prep bSSFP), uncorrected MRF maps and motion
corrected MRF maps. The red square is a zoomed view on the papillary muscle to
highlight the improvement in image sharpness due to motion correction.
Figure 1: Presented
framework for cMRF. 1. Raw data is acquired with described parameters. 2.a) Cine
images are reconstructed from raw data. b) Non-rigid motion fields are determined
from cine data. 3.a) Motion correction is applied during image reconstruction
of MRF images. b) Dictionary matching is applied to obtain parametric
maps. 4. Final T1 and T2 maps of the
heart.
