AUTHOR=Boscolo Daria , Kostyleva Daria , Safari Mohammad Javad , Anagnostatou Vasiliki , Äystö Juha , Bagchi Soumya , Binder Tim , Dedes Georgios , Dendooven Peter , Dickel Timo , Drozd Vasyl , Franczack Bernhard , Geissel Hans , Gianoli Chiara , Graeff Christian , Grahn Tuomas , Greiner Florian , Haettner Emma , Haghani Roghieh , Harakeh Muhsin N. , Horst Felix , Hornung Christine , Hucka Jan-Paul , Kalantar-Nayestanaki Nasser , Kazantseva Erika , Kindler Birgit , Knöbel Ronja , Kuzminchuk-Feuerstein Natalia , Lommel Bettina , Mukha Ivan , Nociforo Chiara , Ishikawa Shunki , Lovatti Giulio , Nitta Munetaka , Ozoemelam Ikechi , Pietri Stephane , Plaß Wolfgang R. , Prochazka Andrej , Purushothaman Sivaji , Reidel Claire-Anne , Roesch Heidi , Schirru Fabio , Schuy Christoph , Sokol Olga , Steinsberger Timo , Tanaka Yoshiki K. , Tanihata Isao , Thirolf Peter , Tinganelli Walter , Voss Bernd , Weber Uli , Weick Helmut , Winfield John S. , Winkler Martin , Zhao Jianwei , Scheidenberger Christoph , Parodi Katia , Durante Marco , the Super-FRS Experiment Collaboration TITLE=Radioactive Beams for Image-Guided Particle Therapy: The BARB Experiment at GSI JOURNAL=Frontiers in Oncology VOLUME=Volume 11 - 2021 YEAR=2021 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2021.737050 DOI=10.3389/fonc.2021.737050 ISSN=2234-943X ABSTRACT=Several techniques are under development for image-guidance in particle therapy. Positron emission tomography (PET) is in use since many years, because accelerated charged particles generate positron-emitting isotopes by nuclear fragmentation in the human body. In heavy ion therapy, most of the PET signal is generated by projectile fragments. A much higher number of coincidences could be counted using radioactive (beta+-decay) beams directly for treatment. This idea has always been hampered by the low intensity of the secondary beams, produced by fragmentation of the primary, stable beams. With the intensity upgrade of the SIS-18 synchrotron in the FAIR-phase-0 in Darmstadt, it is now possible to reach radioactive ion beams sufficiently intense to treat a tumor in small animals. This was the motivation of the BARB (Biomedical Applications of Radioactive ion Beams) experiment that is ongoing at GSI in Darmstadt. This paper will present the plans and instruments developed by the BARB collaboration for testing the use of radioactive beams in cancer therapy.