Portal de Periódicos da CAPES

Partial fourier partially parallel imaging

2005; Wiley; Volume: 53; Issue: 6 Linguagem: Inglês

10.1002/mrm.20492

1522-2594

Mark Bydder, Matthew D. Robson,

Advanced X-ray Imaging Techniques

The techniques of partial Fourier (PF) and partially parallel imaging have been combined using a constrained reconstruction technique. The benefits compared with the individual techniques are reduced imaging time and/or an increase in signal-to-noise ratio. Low-resolution phase maps and coil sensitivities may be obtained using autocalibration or from a prescan followed by additional processing. Minor phase artifacts that are introduced by relying on conjugate symmetry can be reduced using a novel regularization scheme to vary the degree to which PF is used in the reconstruction. A nonrectilinear reconstruction algorithm is presented and the potential for motion artifact reduction is investigated using robust reconstruction.