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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 12) will help reduce the amount of backscatter when firmly applied to the scanning
surface as shown in Figure 14.
Figure 12 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.
