Development of phantom materials with independently adjustable CT- and MR-contrast at 0.35, 1.5 and 3 T. - Elter, A; Hellwich, E; Dorsch, S; Schäfer, M; Runz, A; Klüter, S; Ackermann, B; Brons, S; Karger, C P; Mann, P (Physics in Medicine & Biology, 2021)