Flow Artifact Suppression in Subtractionless First-Pass Peripheral Angiography Based on Vessel Tree Segmentation
Holger Eggers 1 , Rafael Wiemker 1 , Peter Brnert 1 , and Tim Leiner 2
Philips Research, Hamburg, Germany,
of Radiology, University Medical Center Utrecht,
Flow compensation is usually not applied in first-pass
peripheral angiography due to stringent scan time
constraints. This entails the occurrence of flow
artifacts, which are potentially aggravated by the
recently proposed use of Dixon- instead of
subtraction-based background suppression in this
application. Therefore, the effect of flow artifacts
inside the vessels on the water-fat separation is
studied in the present work and illustrated by examples.
Moreover, an approach is proposed that relies on a
vessel tree segmentation to provide a comprehensive
suppression of flow artifacts in subtractionless
first-pass peripheral angiography.
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