Parallel imaging acceleration of spiral Fourier velocity encoded MRI using SPIRiT

Joao L. A. Carvalho Abstract—This paper demonstrates parallel imaging accele-ration of spiral Fourier velocity encoded MRI using the iterative self-consistent parallel imaging reconstruction (SPIRiT) techni-que. Magnitude images and time-velocity distributions obtained with image domain SPIRiT and sum-of-squares reconstruction are compared, for 2-fold and 4-fold undersampling. We show that SPIRiT is able to reduce spatial aliasing from under-sampled time-velocity distributions, with good results for 2-fold undersampling, and moderately good results for 4-fold undersampling. I