[1] Ludwig Maximilians Univ Munchen, Univ Hosp, Dept Radiat Oncol, Munich, Germany
[2] Politecn Milan, Dipartimento Elettron Informaz & Bioingegneria, Milan, Italy
[3] Ludwig Maximilians Univ Muenchen LMU Munich, Dept Med Phys, Garching, Germany
[4] Ludwig Maximilians Univ Munchen, Univ Hosp, Dept Radiol, Munich, Germany
[5] ViewRay Inc, Oakwood Village, OH USA
[6] German Canc Consortium DKTK, Partner Site Munich, Munich, Germany