Michael Schacht Hansen1, Thomas Sangild Srensen2, Peter Kellman1
1National Heart, Lung & Blood Institute, National Institutes of Health, Bethesda, MD, USA; 2Department of Computer Science, Aarhus University, Aarhus, Denmark
A method for iterative reconstruction of high spatial and temporal resolution images from free breathing real-time acquisitions is presented. The golden angle radial acquisition scheme is used to enable reconstruction of low temporal resolution images, and respiration deformation maps are obtained from these images using non-rigid registration. The reconstruction includes the deformation maps into the encoding equations and thus compensates for the motion as part of the reconstruction. The method was successfully applied in five healthy volunteers producing high quality, retrospectively gated cardiac cine images during free breathing.