发明名称 MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS
摘要 The invention relates to a method for obtaining images by means of magnetic resonance (MR) of an object placed in a static magnetic field, which method includes simultaneous measurement of a number of sets of MR signals by application gradients and an array of receiver coils, reconstruction of a number of receiver coil images from the sets MR signals measured and reconstruction of a final image from a distant dependent sensitivity of the receiver coils and the first plurality of receiver coil images. In order to reduce the acquisition time the number of phase encoding steps corresponding to the phase-encoding gradient is reduced with a reduction factor compared to standard Fourier imaging, while a same field of view is maintained as in standard Fourier imaging. In this way fast cardiac imaging may be possible. According to the invention the calculation of complicated matrix inversion can be simplified by determining of an image vector of the final image from a combination of a generalised inverse of a sensitivity matrix and a receiver coil image vector. In this way aliasing artefacts in the final image are reduced. Furthermore, the reconstruction method enables application of non integer reduction factors.
申请公布号 WO9954746(A1) 申请公布日期 1999.10.28
申请号 WO1999IB00652 申请日期 1999.04.14
申请人 KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS AB;PRUESMANN, KLAAS, P.;WEIGER, MARKUS;SCHEIDEGGER, MARKUS, B.;BOESIGER, PETER 发明人 PRUESMANN, KLAAS, P.;WEIGER, MARKUS;SCHEIDEGGER, MARKUS, B.;BOESIGER, PETER
分类号 G01R33/36;A61B5/055;G01R33/3415;G01R33/48;G01R33/54;G01R33/561;(IPC1-7):G01R33/341 主分类号 G01R33/36
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