Abstract #2852

MP2UTE: T1 mapping of short-T2 components

Stefan Sommer^1,2,3, Tom Hilbert^3,4,5, Tobias Kober^3,4,5, Natalie Hinterholzer², Daniel Nanz^2,6, and Constantin von Deuster^1,2,3

¹Siemens Healthcare AG, Zurich, Switzerland, ²Swiss Center for Musculoskeletal Imaging (SCMI), Balgrist Campus, Zurich, Switzerland, ³Advanced Clinical Imaging Technology (ACIT), Siemens Healthcare AG, Lausanne, Switzerland, ⁴Department of Radiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland, ⁵LTS5, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, ⁶University of Zurich, Zurich, Switzerland

Synopsis

T1 mapping of species with very fast T2/T2* relaxation is impossible with conventional methods measuring echoes refocused by gradients or radiofrequency pulses. We therefore present a new approach to estimate T1 relaxation times of short-T2 tissue such as bone, tendon, or ligament by sampling transversal magnetization at different inversion times with a short-T2 sensitive ultra-short-TE readout. The presented T1 mapping method is efficient and B1-insensitive. By acquiring multiple echoes, it is possible to obtain T1 relaxation times at short and long echo-time and therefore assess the influence of short-T2 components.

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