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. 2013 Jul;54(Suppl 1):i129–i135. doi: 10.1093/jrr/rrt043

Fig. 1.

Fig. 1.

One of the three treatment rooms at CNAO. Each room is composed of three different devices. The Patient Positioning System (PPS) (A) on which is docked the couch, the Patient Verification System (PVS), an imaging system fixed to the ceiling from which kV X-ray tubes (B) and flat panels (C) are deployed, and the Optical Tracking System (OTS) (D) composed of three infrared cameras mounted on the nozzle and detecting the positions of reflecting markers fixed on the patient's contention device.