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Abstract #2755

Bias and correction method of UTE trajectory errors in the depiction and relaxometry of deep articular cartilage

Sophia Kronthaler1, Jürgen Rahmer2, Peter Börnert2, Alexandra S. Gersing1, Benedikt J. Schwaiger1, Roland Krug3, and Dimitrios C. Karampinos1
1Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany, 2Philips Research Laboratory, Hamburg, Germany, 3Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, United States

Imaging of the morphological and biochemical composition of the deep articular cartilage has important implications in the assessment of osteoarthritis. The deep cartilage layer has intrinsically short T2* characteristics and ultra-short echo time (UTE) imaging techniques have been recently employed in the depiction of the deep cartilage layer morphology. UTE imaging is known to be affected by k-space trajectory errors. The purpose of the present work is to investigate the effect of trajectory errors in UTE imaging used for the depiction and relaxometry of deep articular knee cartilage. A GIRF-correction is applied to correct eddy-currents induced k-space trajectory errors.

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