Beam spoiler vs bolus, when would you use each.
DRR writes
A beam spoiler may be a low atomic number absorber, such as a Lucite shadow tray which is placed at an appropriate distance from the surface and is utilized to modify the buildup curve (Khan pg 281)
While a graph would represent it best and I should add one, basically a beam spoiler will increase the buildup at the surface while shifting the point of maximum dose buildup closer to the surface.
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