Abstract #4374
Artifact Reduction in Time-of-Flight Imaging at 7 T using Temporally Resolved Compressed Sensing
Anders Garpebring 1,2 , Maarten J. Versluis 1,3 , and Matthias J. P. van Osch 1,3
1
CJ Gorter Center for high field MRI, Leiden
University Medical Center, Leiden, Zuid-Holland,
Netherlands,
2
Radiation
Sciences, Ume University, Ume, Sweden,
3
Radiology,
Leiden University Medical Center, Leiden, Zuid-Holland,
Netherlands
High resolution time-of-flight angiograms are frequently
degraded due to pulsation artifacts. By acquiring the
data randomly and subdividing it based on the timing
relative to the cardiac cycle data suitable for
spatio-temporal compressed sensing can be obtained.
Results based on data from a 7 T scanner show that this
approach is successful in eliminating the pulsation
artifacts and that it in addition enables visualization
of vessel intensity changes and vessel motion.
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