Fig. 1From: Development of a novel delivery quality assurance system based on simultaneous verification of dose distribution and binary multi-leaf collimator opening in helical tomotherapyMeasurement setup. a Schematic. b Photograph. A CCD camera was placed 80 cm away from the surface of the PS to collect the scintillation light. The images were recorded via an image recording interface to record as speedily as possibleBack to article page