Reducing streak artefacts in radial MR fingerprinting of the prostate through automated channel removal
Kaia Ingerdatter Sørland1, Cristopher George Trimble1, Elise Sandsmark2, Tone Frost Bathen1,2, Mattijs Elschot1,2, and Martijn A. Cloos3
1Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway, 2Department of Radiology and Nuclear Medicine, St. Olavs hospital, Trondheim University Hospital, Trondheim, Norway, 3Centre for Advanced Imaging, The University of Queensland, Brisbane, Australia
The extreme undersampling factors used in radial magnetic resonance fingerprinting (MRF) of the prostate lead to strong streak artefacts from the femoral arteries and veins. However, it turns out that only a subset of receiver channels is responsible for these streaks. In this work we automatically detected and removed these from the reconstruction pipeline. The method was applied to MRF acquired with various acceleration factors in seven asymptomatic volunteers, significantly reducing visible streaks in reference tissues surrounding the prostate without impairing the prostate T1 and T2 values in the MRF maps.
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