Tao AI1, Frank
F. Goerner2, Abraham Padua3, Mathias Nittka4,
Xiaoming Li1, Val M. Runge5
1Radiology,
Tongji Hospital, Tongji Medical College, Huazhong University of Science and
Technology, Wuhan, Hubei, China; 2Radiology, University of Texas
Medical Branch (UTMB), Galveston, TX, United States; 3Healthcare
Sector, Siemens AG, Malvern, PA, United States; 4Healthcare
Sector, Siemens AG, Erlangen, Deutschland, Germany; 5Editor-in-Chief
of Investigative Radiology, Galveston, TX, United States
In vitro agarose phantom and animal tissue phantom with three different types of clinically wide-used metal materials were scanned by SEMAC-VAT with a range of SEMAC-encoding steps, high bandwidth and conventional 2D TSE sequence at both 1.5T and 3T. The performance of SEMAC-VAT technique in metal artifact correction was evaluated by both quantitative and qualitative analysis. The results demonstrated SEMAC-VAT significantly reduced metal artifact due to different metal materials and optimal SEMAC-encoding steps of 15-20 for Cobalt chromium and 5-10 for both Oxidized Zirconium and Titanium were recommended for clinical use.