Automatic off-resonance correction with piecewise linear autofocus
نویسندگان
چکیده
(red arrows) and other places, the proposed method removes more offresonance artifacts than conventional autofocus and produces images comparable to field map-based correction. The estimated field map also exhibits better agreement with measurement except in featureless areas (white circle). Eq 1: fo(x,y) = fc + fxx + fyy Eq 2: so(kx,ky) = e–j2πfct s(kx+fxt,ky+fyt) Eq 3: s(0,0) = e+j2πfcTE so(–fxTE, –fyTE)
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