Anaesthesia machine is to prepare a gas mixture of precisely known, but variable composition. The gas mixture can then be delivered to a breathing system.
A C-Arm machine is an advanced medical imaging device based on X-ray technology. They are primarily used for fluoroscopy capabilities, although they have radiography capability too. C-Arm is called so, due to its C-shaped arm, which is used to connect the x-ray source on one end and the detector on the other.
A computerized tomography (CT) scan combines a series of X-ray images taken from different angles around your body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues inside your body. CT scan images provide more-detailed information than plain X-rays.