PTCOG Publications PTCOG Reports (© PTCOG) Shielding Design and Radiation Safety of Charged Particle Therapy Facilities, N. E. Ipe et al. (Ed.), 2010, 445 p. PTCOG Report No. 1, 2010 Download PDF Shielding Design and Radiation Safety of Charged Particle Therapy Facilities Addendum 1,PTCOG Report No. 1, 2010 Download PDF PTCOG Safety Group Report on Aspects of Safety in Particle Therapy, Version 2,J. Flanz et al., May 2016, 66 p. PTCOG Report No. 2, 2016 Download PDF PTCOG White Paper on Particle Therapy Efficiency: Aspects of Quality Assurance, Vol.1,J. Flanz et al., May 2016, 13 p. PTCOG Report No. 2, 2016 Download PDF