Abstract #4358
Comparison of image-based and reconstruction-based respiratory motion correction techniques for 3D whole-heart MRI
Nadia Paschke 1 , Olaf Dssel 1 , Tobias Schaeffter 2 , Claudia Prieto 2 , and Christoph Kolbitsch 2
1
Institute of Biomedical Engineering,
Karlsruhe Institute of Technology, Karlsruhe,
Baden-Wrttemberg, Germany,
2
Division
of Imaging Sciences and Biomedical Engineering, Kings
College London, London, United Kingdom
Navigator-gated acquisitions are in general used in 3D
whole-heart MRI to reduce respiratory motion artefacts
with the final scan time depending strongly on the
breathing pattern of the subject. Motion correction
approaches have been proposed to avoid these subject
dependencies and ensure fast 3D high-resolution scans
due to increased scan efficiency. Here two different
respiratory motion correction techniques are compared in
4 volunteers and results show that incorporating motion
information directly into an iterative reconstruction
leads to the best image quality with a similar depiction
of the coronary arteries and a scan time reduction of
43% compared to respiratory gating.
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