Parallel MR Imaging with Accelerations Beyond the Number of Receiver Channels Using Real Image Reconstruction. Conference Paper uri icon


  • Parallel imaging using multiple phased-array coils and receiver channels has become an effective approach to high-speed magnetic resonance imaging (MRI). To obtain high spatiotemporal resolution, the k-space is subsampled and later interpolated using multiple channel data. Higher subsampling factors result in faster image acquisition. However, the subsampling factors are upper-bounded by the number of parallel channels. Phase constraints have been previously proposed to overcome this limitation with some success. In this paper, we demonstrate that in certain applications it is possible to obtain acceleration factors potentially up to twice the channel numbers by using a real image constraint. Data acquisition and processing methods to manipulate and estimate of the image phase information are presented for improving image reconstruction. In-vivo brain MRI experimental results show that accelerations up to 6 are feasible with 4-channel data.

name of conference

  • 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference

published proceedings

  • Conf Proc IEEE Eng Med Biol Soc

author list (cited authors)

  • Ji, J., & Wright, S.

citation count

  • 2

complete list of authors

  • Ji, Jim||Wright, Steven

publication date

  • January 2005