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Abstract #3664

Synthetic T2-weighted contrasts of the lumbar spine derived from fast quantitative mapping – the icing on the cake

Marcus Raudner1, Markus Schreiner1,2, Tom Hilbert3,4,5, Tobias Kober3,5,6, Anna Szelenyi7, Vladimir Juras1, and Siegfried Trattnig1
1High Field MR Centre, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, 2Department of Orthopedics and Trauma Srugery, Medical University of Vienna, Vienna, Austria, 3Advanced Clinical Imaging Technology, Siemens Healthcare, Lausanne, Switzerland, 4Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, 5LTS5, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, 6Department of Radiology, University Hospital and University of Lausanne, Lausanne, Switzerland, 7Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria

GRAPPATINI has already been shown to allow short acquisition times with diagnostic synthetic T2-weighted (T2w) images in the knee. This study investigates how different effective echo times influence the resulting contrast-to-noise ratio of GRAPPATINI compared to a conventional T2w turbo spin-echo (TSE) sequence in the spine. Overall, the synthetic T2w images maintained diagnostic quality while being reconstructed from highly-undersampled k-space data in 2:27 min acquisition time vs. 2:01 min for the T2w TSE with the advantage of GRAPPATINI to also offer multiple synthetic contrasts alongside robust T2 mapping.

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