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Abstract #4213

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

1 Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China, 2 Siemens Healthcare, MR Collaborations NE Asia, Beijing, China, 3 Siemens 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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