One simple device can align Linac, ODI, CT, Lasers and Couch.
Features
• Optical distance check over 20 cm range
• Collimator 90° rotation test
• Laser’s test: side, overhead and sagittal
• Couch height test over 20 cm range in 5 cm increments
• Couch vertical travel wander
• Couch 90° left or right rotation
• CT test cut for couch center alignment and height
• CT side laser height check over 20 cm
• CT laser height test over 20 cm
• CT couch height vertical travel
• CT couch height, vertical travel, CT cut stays on same spot to indicate gantry vertical
• Gantry 90° right and left test with radiation and gantry vertical test using film or image receptor
• 23 cm×23 cm×2 cm thick black acrylic with a 0.5 cm white engraving material top
• Three leveling screws with rubber tips to prevent movement
• One bubble level attached to top with screws
• Two half-moon side plates, scribed with black dashes that align to top of leveling plate and center markings on leveling plate
• 10 cm×10 cm and 20 cm×20 cm field
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Neshan