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Abstract #2489

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

1 CMIV and Linkping University, Linkping, Sweden, 2 Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden, 3 Department of Clinical Physiology, County Council of stergtland, Linkping, Sweden

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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