Abstract #1205
Sodium MRI of Cartilage Repair Tissue in the Ankle Joint at 7T
Stefan Zbyn 1 , Stephan E. R. Domayer 2 , Martin O. Brix 1,2 , Sebastian Apprich 1,2 , Jochen G. Hofstaetter 2 , Sonja M. Walzer 2 , Vladimir Mlynarik 1 , Vladimir Juras 1 , Reinhard Windhager 2 , and Siegfried Trattnig 1
1
High Field MR Centre, Department of
Biomedical Imaging and Image-Guided Therapy, Medical
University Vienna, Vienna, Austria,
2
Department
of Orthopedics, Medical University Vienna, Vienna,
Austria
To our best knowledge, this is the first report on
employing sodium (23Na) MRI for the evaluation of native
cartilage and cartilage repair tissue in the ankle
joint. Data from cadaver ankle samples demonstrate that
23Na MRI is sensitive to changes in the GAG content of
thin tibial and talar cartilage in the ankle. Observed
23Na concentrations in the volunteers are in agreement
with previous findings, and demonstrate feasibility of
the quantification of 23Na concentration in cartilage of
the ankle joint at 7T. 23Na MRI may be useful for the
noninvasive evaluation of the repair tissue in the ankle
joint.
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