Diffusion pore imaging enables the detection of the average shape of arbitrary closed pores in an imaging volume element. Until now, an experimentally challenging phase measurement, either by measuring with a long-narrow gradient profile or by employing double diffusion encodings, was a prerequisite to obtain the full information on the Fourier transform of the pore image. In this study, we present a first experiment, where the phase information is recovered alone from the magnitude information acquired by q-space imaging. To solve this phase problem, we adopted a phase retrieval algorithm that is widely applied to X-ray diffraction data.
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