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Abstract #4492

7 Tesla quantitative hip MRI: A comparison between TESS and CPMG for T2 mapping

Oliver Kraff1, Andrea Lazik-Palm1,2, Rahel Heule3,4, Oliver Bieri3,4, and Harald H Quick1,5

1Erwin L. Hahn Institute for MRI, University Duisburg-Essen, Essen, Germany, 2Department of Diagnostic and Interventional Radiology and Neuroradiology, University Duisburg-Essen, University Hospital, Essen, Germany, 3Division of Radiological Physics, Department of Radiology, University of Basel Hospital, Basel, Switzerland, 4Department of Biomedical Engineering, University of Basel, Basel, Switzerland, 5High Field and Hybrid MR Imaging, University Duisburg-Essen, University Hospital, Essen, Germany

Purpose was the assessment of TESS T2 relaxometry in comparison to standard CPMG as a potential candidate to improve workflow in quantitative hip MRI protocols at 7T. A total of 8 healthy volunteers were included. T2 relaxation times were measured by manually drawing regions of interest in both acetabular and femoral cartilage in multiple regions of the hip joint. Compared to CPMG, TESS provides systematically reduced T2 values in both hip cartilage layers, in line with previously reported values. Nevertheless, with a 5-fold increase in spatial coverage TESS seems to be a good candidate to improve hip protocols at 7T.

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