Comparison between Cartesian and Spiral MR flow imaging of stenotic flow.
Sven Petersson 1 , Petter Dyverfeldt 1 , Andreas Sigfridsson 2 , Carl Johan Carlhll 1,3 , and Tino Ebbers 1
CMIV and Linkping University, Linkping,
Institutet and Karolinska University Hospital,
of Clinical Physiology, County Council of stergtland,
Spiral 4D flow MRI has recently been validated for the
assessment of aortic and intra-cardiac velocities. This
study compares the performance of spiral and Cartesian
flow MRI for the assessment of velocity and turbulent
kinetic energy in stenotic flow. Spiral trajectories are
relatively insensitive to flow artifacts and therefore
well suited for stenotic flow assessment. The
performance was evaluated by in-vitro measurements on a
stenotic flow phantom. The spiral sequence was three
times faster and less sensitive to displacement
artifacts compared to the Cartesian sequence. In
conclusion, spiral flow MRI appears favorable for the
assessment of stenotic flow.
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