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Abstract #5034

Depth dependence of diffusion in articular cartilage of the knee visualized at 7T

Sander Brinkhof1, Qinwei Zhang2, Martijn Froeling1, Gustav J. Strijkers3, Aart J. Nederveen2, Keita Ito4,5, and Dennis W.J. Klomp1

1Radiology, University Medical Center Utrecht, Utrecht, Netherlands, 2Radiology, Academic Medical Center, Amsterdam, Netherlands, 3Biomedical Engineering and Physics, Academic Medical Center, Amsterdam, Netherlands, 4Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands, 5Orthopaedics, University Medical Center Utrecht, Utrecht, Netherlands

The goal of this study was to apply high-resolution diffusion weighted imaging (DWI) at 7T to assess depth dependence of diffusion in the articular cartilage in the knee. Four healthy volunteers were scanned with a diffusion prepared TSE sequence. ADC maps were consequently used to assess the depth dependence of ADC throughout the articular cartilage. The ADC value was shown to significantly increase from the bone-cartilage interface to the superficial zone. This work shows that the significant depth dependence of the ADC in cartilage layers can be observed in vivo on 7T with diffusion weighed imaging.

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