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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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