SENSE Imaging Using the Weak and Strong Voxel Approach Without the Assumption of Voxel Functions Being Dirac Distributions

Marcel Gutberlet¹

Conventional SENSE imaging uses the assumption that the voxels are Dirac distributions and that the voxel functions fulfil the orthonormality relation, which is called the weak voxel approach. These two assumptions of the voxel functions allow a simple and fast reconstruction but may also result in residual aliasing. In this work, an analytic expression for the encoding matrix and the correlation matrix of the encoding functions is presented allowing an efficient and accurate SENSE reconstruction using the weak voxel and the strong voxel approach without the assumption of voxels being Dirac distributions.