Evaluating Undersampling Schemes and Deep Learning Reconstructions for High-Resolution 3D Double Echo Steady State Knee Imaging at 7 T: A Comparison Between GRAPPA, CAIPIRINHA, and Compressed Sensing.

Journal: Investigative radiology
Published Date: Sep 1, 2025

Abstract

OBJECTIVE: The 3-dimensional (3D) double echo steady state (DESS) magnetic resonance imaging sequence can image knee cartilage with high, isotropic resolution, particularly at high and ultra-high field strengths. Advanced undersampling techniques with high acceleration factors can provide the short acquisition times required for clinical use. However, the optimal undersampling scheme and its limits are unknown.

Authors

  • Thomas Marth
    Advanced Clinical Imaging Technology, Siemens Healthineers International AG, Zurich, Switzerland (C.v.D.); Swiss Center for Musculoskeletal Imaging, Balgrist Campus AG, Zurich, Switzerland (T.M., D.N., C.v.D.); Medical Faculty, University of Zurich, Switzerland (T.M., A.A.M., G.W.K., R.S., D.N.); Department of Radiology, Balgrist University Hospital, Zurich, Switzerland (T.M., A.A.M., G.W.K., R.S.); and Research & Clinical Translation, Magnetic Resonance, Siemens Healthineers AG, Erlangen, Germany (M.D.N., D.P.).
  • Adrian Alexander Marth
    From the Swiss Center for Musculoskeletal Imaging, Balgrist Campus AG, Zurich, Switzerland (A.A.M., C.v.D., S.S., D.N.); Department of Radiology, Balgrist University Hospital, Zurich, Switzerland (A.A.M., G.C.F., S.S.G., R.S.); Advanced Clinical Imaging Technology, Siemens Healthineers International AG, Zurich, Switzerland (C.v.D., S.S.); and Medical Faculty, University of Zurich, Zurich, Switzerland (R.S., D.N.).
  • Georg Wilhelm Kajdi
  • Marcel Dominik Nickel
    MR Application Predevelopment, Siemens Healthineers AG, Erlangen, Germany.
  • Dominik Paul
  • Reto Sutter
    Department of Radiology, Balgrist University Hospital
  • Daniel Nanz
  • Constantin von Deuster

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