J Med Phys Close
 

Figure 1: A schematic diagram of the IBA uniform scanning nozzle: Proton beams (p), a first scatterer (a), a range modulator wheel (b), two scanning magnets (c) and (d), variable collimators (e), monitor unit ionization chambers (f), a snout (g), an aperture (h), a range compensator (i), and patient or phantom surface (j). Figure not to scale

Figure 1: A schematic diagram of the IBA uniform scanning nozzle: Proton beams (p), a first scatterer (a), a range modulator wheel (b), two scanning magnets (c) and (d), variable collimators (e), monitor unit ionization chambers (f), a snout (g), an aperture (h), a range compensator (i), and patient or phantom surface (j). Figure not to scale