Passage: The most common imaging modality to be used in hybrid ORs is a C-Arm. Expert consensus rates the performance of mobile C-arms in hybrid ORs as insufficient, because the limited power of the tube impacts image quality, the field of view is smaller for image-intensifier systems than for flat-panel detector systems and the cooling system of mobile C-Arms can lead to overheating after just a few hours, which can be too short for lengthy surgical procedures or for multiple procedures in a row, that would be needed to recover the investment in such a room.Fixed C-Arms do not have these limitations, but require more space in the room. These systems can be mounted either on the floor, the ceiling, or both if a biplane system is chosen. The latter is the system of choice if pediatric cardiologists, electrophysiologists or neurointerventionalists are major users of the room. It is not recommended to implement a biplane system if not clearly required by these clinical disciplines, as ceiling-mounted components may raise hygienic issues: In fact, some hospitals do not allow operating parts directly above the surgical field, because dust may fall in the wound and cause infection. Since any ceiling-mounted system includes moving parts above the surgical field and impairs the laminar airflow, such systems are not the right option for hospitals enforcing highest hygienic standards. (see also and, both German only)

Question: What location can C-arms be mounted to?
the floor, the ceiling, or both