K-SPACE SAMPLE DENSITY COMPENSATION FOR MAGNETIC RESONANCE IMAGE RECONSTRUCTION
摘要
<p>The present invention provides a method for producing density-compensated MR images having improved signal-to-noise ratio and with reduced computational burden. The method includes sampling MR data using a rotationally symmetric acquisition trajectory, generating a cross-correlation matrix, and applying a discreet Fourier transform (DFT) to the acquired MR data and the cross correlation matrix. The method further includes employing the transformed MR data and transformed cross-correlation matrix in a linear system to produce a set of density-compensated transformed MR data, which may transformed into density compensated MR data by application of an inverse DFT. The density compensated MR data may be reconstructed by a variety of techniques to produce density compensated images.</p>
申请公布号
WO2009067691(A1)
申请公布日期
2009.05.28
申请号
WO2008US84397
申请日期
2008.11.21
申请人
BRIGHAM AND WOMEN'S HOSPITAL, INC.;RYBICKI, FRANK, J.;MULKERN, ROBERT, V.;MITSOURAS, DIMITRIOS