NCRP-147 Shielding Models 147 Shielding Models - Radiation ...

• Method:
“Representative Room”
Barrier Requirements
– Given N patients/week, need to shield to P/T, a
distance d from the x-ray source
N T
P d
– Calculate in mGy -1 m -2
2
– Look up the required barrier thickness on the
graph appropriate for that workload
distribution, barrier, and barrier material
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