Prior Knowledge for Improved Image Estimation from Raw MRI Data

In this paper is presented a method for the accurate estimation of the image boundary from incomplete raw MRI data. This is necessary for the phase correction and the image reconstruction from incomplete Cartesian or Radial scans using MR techniques and therefore for the reduction of MRI scan time. The exact estimation method comprises the binarization of the low resolution image, the fast separation of the displayed objects using image block representation and the extraction of the external and of all the interior edges which can be used as prior information for the phase correction and the image reconstruction.