Shielding For Radiation Therapy Radiotherapy Radiation Shielding, Protection and Bunker Design Electromagnetic and Radio Frequency Interference (RFI / EMI), Radiation (X-ray, Gamma & Neutron), Magnetic Fields, Electromagnetic Pulse. Healthcare projects; Radiotherapy treatment facilities – radiation shielding installations including linear accelerator (linac) bunkers Medical Imaging suites - PET & PET/CT scanner radiation shielding installations.