发明名称 Method and device for magnetic resonance imaging on the basis of a partially parallel acquisition (PPA)
摘要 In a method, apparatus and computer-readable medium for magnetic resonance imaging of a contiguous region of a human body on the basis of partially parallel acquisition (PPA) by excitation of nuclear spins and measurement of radio-frequency signals representing the excited spins, are implemented. A k-space single channel reference image [R_kal] is calculated from the previously measured reference lines of a sub-coil series of N sub-coils with a phase-sensitive combination method. A GRAPPA coefficient matrix [W] is calculated by solving the equation system [R_kal]=[W]×[I_kal] wherein [I_kal] represents one block from the sub-coil series. A k-space single channel image [R] is successively completed by applying [W] to successive blocks [I_z] shifted relative to one another, the blocks [I_z] being of a previously measured, under-sampled sub-coil series of the N sub-coils, and [R] is transformed into image space.
申请公布号 US7859262(B2) 申请公布日期 2010.12.28
申请号 US20080271116 申请日期 2008.11.14
申请人 SIEMENS AKTIENGESELLSCHAFT 发明人 JELLUS VLADIMIR
分类号 G01V3/00 主分类号 G01V3/00
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