Abstract #0517

Multi-frequency reconstruction for frequency-modulated stack-of-stars bSSFP

Anne Slawig¹, Tobias Wech¹, Valentin Ratz¹, Johannes Tran-Gia^1,2, Henning Neubauer¹, Thorsten Bley¹, and Herbert Köstler¹

¹Departement for Diagnostic and Interventional Radiology, University of Würzburg, Würzburg, Germany, ²Department of Nuclear Medicine, Würzburg, Germany

Banding artefacts in images acquired by bSSFP are a big challenge in fast MRI as they can considerably reduce image quality and deteriorate the diagnostic value. As the steady state tolerates small shifts in frequency, it is possible to acquire a frequency-modulated bSSFP. Unfortunately a simple gridding reconstruction of such a measurement suffers from signal loss. Our study proposes a multi-frequency reconstruction and demonstrates its capability of reconstructing banding-free 3D images while retaining the high signal levels of standard bSSFP.

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