Abstract #3664

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

Marcus Raudner¹, Markus Schreiner^1,2, Tom Hilbert^3,4,5, Tobias Kober^3,5,6, 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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