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Abstract #0949

Removal of FM Sidebands Artifacts in NWS MRS by QZ-Bac Algorithm

Jyh-Miin Lin1, Hsiao-Wen Chung2, Shang-Yueh Tsai3

1Department of Radiology, Mackay Memorial Hospital, Taipei, Taiwan; 2Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan; 3Department of Electrical Engineering, Chang Gung University, Tao Yuan, Taiwan

1H non-water suppressed(NWS) MRS is a developing technique to in vivo metabolites concentration, with high accuracy than conventional water suppressed(WS) MRS. In NWS MRS, complete removal of water signal is critical for quantifying metabolites concentration. We propose a novel postacqusitional (QZ-bac) algorithm to eliminate water peaks and water related sidebands. With this method, the water related frequency modulation signals were completely removed by exploiting the antisymmetry property. Computer simulations and in vivo demonstration were shown.