CSA C22.2 No. 60601-2-68
Medical electrical equipment - Part 2-68: Particular requirements for the basic safety and essential performance of X-ray-based image-guided radiotherapy equipment for use with electron accelerators, light ion beam therapy equipment and radionuclide beam therapy equipment (Adopted IEC 60601-2-68:2014, first edition, 2014-09, with Canadian deviations)