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Abstract #4178

Assessment of the clinical relevance of triple-echo steady-state T2 mapping in articular cartilage

Vladimir Juras 1,2 , Klaus Bohndorf 1 , Rahel Heule 3 , Claudia Kronnerwetter 1 , Pavol Szomolanyi 1,2 , Benedikt Hager 1 , Oliver Bieri 3 , and Siegfried Trattnig 1

1 High Field MR Centre, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria, 2 Department of Imaging Methods, Institute of Measurement Science, Bratislava, Slovakia, 3 Division of Radiological Physics, Department of Radiology, University of Basel Hospital, Basel, Switzerland

A clinical relevance of T2 mapping in cartilage measured by recently introduced triple-echo steady-state (3D-TESS) sequence was assessed by comparing to standard multi-echo spin-echo T2 at 3T MRI. Both methods demonstrated the ability to distinguish between healthy cartilage and lesions. Most importantly, 3D-TESS provides results similar to CPMG within substantially shorter scan times and are B0- and B1-insensitive. This benefit will be even more pronounced at ultra-high-field MR systems, where the TA of conventional T2 mapping is substantially compromised due to specific absorption rate issues.

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