PF&A was tasked with renovating the Radiosurgery Suite for Riverside Regional Medical Center. Phase one of this project involved reinforcing the concrete floor inside the existing vault in order to support the 50 ton weight of the Gamma Knife equipment and source loader. The structure of the existing corridor was not sufficient to support the weight of the equipment, therefore an exterior radiation shielded door was installed to provide an entrance for the Gamma Knife equipment. The Gamma Knife vault’s interior finishes were designed to create a calm and soothing environment to reduce levels of stress to the patient. By using a floor pattern, we were able to indicate the high radiation areas of the room. Administrative offices, waiting area, planning room, exam rooms, and corridor finishes were upgraded during phase two.