Image-guided medical robot interventions require high quality medical image as well as high imaging speed. Parallel MRI reconstruction accelerates imaging speed with keeping quality of image content. An infinite impulse response (IIR) model has been proposed to improve the finite impulse response (FIR) model, which is applied in generalized auto-calibrating partially parallel acquisitions (GRAPPA) image reconstruction method. Recursive terms of IIR GRAPPA are able to improve conventional GRAPPA
