Effects of Discrete and Finite Sampling in PatLoc Imaging

Gerrit Schultz¹, Maxim Zaitsev¹, Jrgen Hennig¹

Discrete and finite sampling leads to the well known truncation artifacts, which include ringing and possibly aliasing. In PatLoc imaging the gradients are replaced by nonlinear, non-bijective encoding fields. In this case no trivial mapping from frequency space to image space exists. It turns out that the truncation artifacts appear in frequency space in principle in the usual way. The shape of the encoding fields then determines how these artifacts translate into image space. The purpose of this work is to examine these properties and illustrate them with simulation data. One application of this finding is accelerated imaging using PatLoc and SENSE imaging in combination.