This volume is honoring the 100th anniversary of the publication of the famous paper of Johann Radon: “Über die Bestimmung von Funktionen durch ihre Integralwerte längs gewisser Mannigfaltigkeiten,” which appeared in Berichte über die Verhandlungen der Königlich-Sächsischen Gesellschaft der Wissenschaften zu Leipzig, Mathematisch-Physische Klasse 69 (1917), pp. 262-277 . Exactly 100 years later, in 2017, the Johann Radon Institute for Computational and Applied Mathematics (RICAM) jointly with the Johannes Kepler University Linz (JKU) held a conference in honor of the publication of Johann Radon’s paper. The conference took place from March 27th to 31st in Linz, Austria https://www.ricam.oeaw.ac. at/events/conferences/radon100/ and was attended by about 170 participants who reported on the status of the still growing field of mathematical tomography.