PROBLEM TO BE SOLVED: To suppress a fat signal and improve an MR image in regard to a method and an apparatus of magnetic resonance imaging (MRI) especially for water-fat separation.SOLUTION: The method is used for separation of chemical shift components of water w and fat f, and (i) estimates magnetic field nonuniformity &beta by residual treatment of the following Moore-Penrose solving method, cos(&alphan&beta)*w + cos[&alphan(1+&beta)]*f = real(In) sin(&alphan&beta)*w + sin[&alphan(1+&beta)]*f = real(In), and (ii) the answers of w and f are found from the original input signal In by using of the estimated magnetic filed nonuniformity &beta.COPYRIGHT: (C)2005,JPO&NCIPI【課題】脂肪信号を抑圧し、MR画像を改良すること。【解決手段】水wと脂肪fの化学シフト成分を分離する方法であり、(i)次のムーア-ペンローズの解法の残差処理により磁場不均一性βを推定し、cos (αnβ)*w + cos [αn(1+β)]*f = real (In)sin (αnβ)*w + sin [αn(1+β)]*f = real (In)(ii)推定された磁場不均一性βを使ってオリジナルの入力信号Inからwとfの解を求める。【選択図】図1
