C-arm Basics
📡
View 1 of 3

AP

IMAGE RECEPTOR
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.
Lateral