| 摘要 |
<p>An incomplete set (42, 44, 42 min , 44 min ) of magnetic resonance image data is collected and stored in a view memory (40). The incomplete set of image data includes a central or first set of data values (42, 42 min ) and a side or second set of data values (44, 44 min ). The central data set (42, 42 min ) is operated on by a roll-off filter (64) and a Fourier transform means (66) to create a normalized phase map (72). The first and second data sets (42, 42 min , 44, 44 min ) are Fourier transformed by means (82) and phase corrected by being multipled by means (86) with a complex conjugate (88) of the corresponding phase map (72) data value to produce a first phase corrected image representation (f1(x,y)e<-i phi (x,y)>). A third data set (46, 46 min ) is generated by means (90) by determining the complex conjugate (F*(kx,ky)) of the second or side data set (44, 44 min ). The third data set (46, 46 min ) is Fourier transformed by means (94) and multipled by means (98) by a corresponding value from the phase map (72) to produce a second phase corrected image representation (f2(x,y)e<+i phi (x,y)>). The first and second phase corrected image representations are summed by means (100) and stored in a resultant image (f(x,y)) memory (102).</p> |
