| 摘要 |
PURPOSE:To obtain a clear and interpolation enlarged MRI imaging without the deterioration of resolution by zero packing the two-dimensional data of a sampled NMR signal in both directions of a line and a column or one direction according to a magnification ratio, Fourier-transforming and interpolation enlarging said data. CONSTITUTION:Considering the NMR signal data s(mx, my) mx=1, 2...M, my=1, 2...M sampled into MXM as the second quadrant of the enlarged picture, a zero packing processing for packing 0 to the first, the third and the fourth quadrants respectively is carried out to have the data of NXN. The data is two dimensionally Fourier-transformed to obtain two dimensional complex number matrixes of NXN S0(lx, ly), lx=1, 2...N, ly=1, 2...N. The absolute value of the S0 is taken, and a the two dimensional matrix of F0(lx, ly)=¦S0(lx, ly)¦ is obtained and a brightness change is displayed correspondingly to the value of F0. |
