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QSA Global Inc.
40 North Avenue Burlington, MA 01803
888.272.2242
781.272.2000
F: 781.359.9179
qsa-global.com
Backscatter
Backscatter occurs when X-rays interact with material (piping, insulation, etc.), potentially travelling in undesirable
directions (e.g. towards the operator). Backscatter is dependent on many variables including geometry, material, and
energy level. It can potentially increase the dose to the operator’s extremities.
The best way to minimize backscatter is to use the lowest kV / mA combination to achieve acceptable images. Use of the
optional backscatter shield (Figure 10) will help reduce the amount of backscatter when firmly applied to the scanning
surface as shown in Figure 10.
Figure 10 - Optional Backscatter Shield (Item #415600)
CAUTION
Whenever scanning an unknown material and/or geometry, it is recommended that operators monitor for
backscatter levels to minimize operator dose.