Mapping Biological Current Densities With Ultrafast Acoustoelectric Imaging: Application to the Beating Rat Heart. - Beatrice Berthon; Alexandre Behaghel; Philippe Mateo; Pierre-Marc Dansette; Hugues Favre; Nathalie Ialy-Radio; Mickaël Tanter; Mathieu Pernot; Jean Provost (IEEE Trans. Medical Imaging, 2019)