An image space approach to Cartesian based parallel MR imaging with total variation regularization

►Presents a variational approach in image space for parallel MRI. ► Joint reconstruction of image content and coil modulations. ► Total variation regularization of image combined with biharmonic regularization of modulations. ► Non-convexity of the problem is addressed by a normalization. ► Outperforms standard approaches when little calibration information is available.