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View 2 of 3

Lateral

Patient position

On OR table per procedure.

Part position

Anatomy of interest centered in C-arm.

Central ray

Per projection — tube/intensifier orientation drives geometry.

IR placement

9 in or 12 in image intensifier / flat panel.

Tech pearls

Stand on intensifier side — scatter is highest near the tube.
Use lead glasses and thyroid shield always.
Boost/mag modes increase dose — use sparingly.