MR Imaging of Knee Implants Using SEMAC at 3T
TAO AI 1 , Panli Zuo 2 , Yiqi Hu 1 , Mathias Nittka 3 , and Liming Xia 1
Radiology, Tongji Hospital, Tongji Medical
College, Huazhong University of Science and Technology,
Wuhan, Hubei, China,
Healthcare, MR Collaborations NE Asia, Beijing, China,
Healthcare, Germany, Erlangen, Germany
In order to investigate the efficacy of SEMAC and high
bandwidth (high BW) techniques in metal artifact
reduction and clinical applications at 3T MR imaging,
tissue specimens with CoCr/Ti and OxZr/Ti implants and
ten patients with total knee replacements were imaged,
and the artifact size, distortion and image quality were
quantitatively and qualitatively assessed. The results
demonstrated that SEMAC allows for significant metal
artifact reduction and distortion correction at 3T MR
imaging of knee implants, as compared with the
conventional and increased readout bandwidth sequences.
With optimizations, SEMAC would be routinely chosen for
the clinical application of knee prosthesis.
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