Method and apparatus for anatomically tailored k-space sampling and recessed elliptical view ordering for bolus-enhanced 3D MR angiography

  • US 7,003,343 B2
  • Filed: 04/01/2002
  • Issued: 02/21/2006
  • Est. Priority Date: 03/30/2001
  • Status: Active Grant
First Claim
Patent Images

1. A method of accelerating volumetric MR imaging of arteries or other structures comprising the following:

  • a) an image volume having x, y and z orthogonal coordinates and a thickness along z=Tv;

    b) for every x, y location within the volume the structures to be imaged have a thickness Ts<

    Tv;

    c) three-dimensional k space sampling is accelerated by a factor F≦

    Tv/Ts by increasing the spacing of k space sampling along kz by a factor of F while maintaining the sampling spatial frequency ranges unchanged;

    d) reconstruct with 3-D Fourier Transformation utilizing a field of view in the z direction which is equal to Tv/F;

    e) create 1/F duplicate copies of the reconstructed volumetric data and stacked together adjacent to each other in the z direction; and

    f) post-process the combined multiple copies of volumetric data to select a subset of the total combined volume containing a single complete data set of the structures of interest.

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