Lokoregionäre Deformationsmuster im Patellarknorpel nach unterschiedlichen Belastungsparadigmen - hochauflösende 3-D-MR-Volumetrie bei 3 T in vivo

Horng, Annie; Raya, José G.; Zscharn, M; König, Lorenz; Notohamiprodjo, Mike; Pietschmann, Matthias F.; Hoehne-Hückstädt, U.; Hermanns, Iris; Glitsch, Ulrich; Ellegast, Rolf; Hering, K. G.; Reiser, Maximilian; Gläser, Christian

doi:10.1055/s-0029-1245790

Cited by 5 publications

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Knee cartilage MRI with in situ mechanical loading using prospective motion correction

Lange

Maclaren

Herbst

et al. 2013

Magnetic Resonance in Med

View full text Add to dashboard Cite

Purpose To assess the feasibility of high resolution knee cartilage MRI with in situ mechanical loading using optical tracking to compensate for motion. Methods In vivo cartilage MRI with in situ mechanical loading is demonstrated on a clinical 3T system for the patellofemoral as well as for the tibiofemoral knee joint using a T1-weighted spoiled 3D gradient-echo sequence. Prospective motion correction is performed with a moiré phase tracking system consisting of an in-bore camera and a single tracking marker attached to the skin. Results Rigid-body approximation required for prospective correction with optical motion tracking is fulfilled well enough for the patellofemoral as well as for the tibiofemoral joint when the tracking marker is attached to the knee cap and the shin, respectively. Presaturation proves to be efficient in suppressing pulsation artifacts from the popliteal artery and residual motion artifacts primarily arising from non-rigid motion of the posterior knee compartment. Conclusion The proposed technique enables knee cartilage imaging under in situ mechanical loading with sub-millimeter spatial resolution devoid of significant motion artifacts and thus appropriate for cartilage volumetry. It has the potential to provide new insight into the biomechanics of the knee and might complement the panoply of diagnostic MR methods for osteoarthritis.

show abstract