Comparing spiral and cartesian trajectories for Dixon-based 3D thoracic MR angiography
Autor(in); Institution
Stoll, Robert; Research Center for Metrology, Indonesian Institute of Sciences RCM-LIPI, Serpong, Banten, INDONESIA
Schäffter, Tobias; 8, Medizinphysik und metrologische Informationstechnik, PTB-Berlin; Department of Medical Engineering, Technical University Berlin, Berlin, GERMANY; Einstein Center Digital Future (ECDF), Berlin, GERMANY
Motivation: Spiral undersampling allows for further scan time reduction as compared to cartesian undersampling.
Goals: We aimed to compare reconstruction performances of cartesian and spiral sampling for several acceleration factors.
Approach: Echo images were derived from an existing water-fat volume and undersampled in k-space via a cartesian and a stack-of-spirals sampling scheme. The undersampled data was reconstructed and an image-based water-fat separation was performed.
Results: Variable density stack-of-spirals were shown to outperform cartesian sampling at high accelerations.
Zitierung
Stoll, R., Schäffter, T., Kolbitsch, C., & Giese, D. (2026). Comparing spiral and cartesian trajectories for Dixon-based 3D thoracic MR angiography. Annual Meeting of the ISMRM, Capetown, 9-14, Mai, 2026, South Africa.
