Performing Shielding Calculations for Diagnostic Radiology Based on NCRP Report 147 Methodology: A Review
Abstract
The purpose of this work to provide a comprehensive review and effective tool for performing shielding calculations for diagnostic radiology reliably, cost-effective and a timesaving since the shielding is the most effective element in diagnostic radiology safety design. The recommendations of National Council on Radiation Protection and Measurements (NCRP) Report No. 49, which has been the main reference for the structural radiation shielding design of diagnostic X-ray facilities for a while, are most frequently used in structural radiation shielding calculations for X-ray diagnostic facilities. The NCRP Report 49 calculating technique has undergone numerous changes over time, rendering it virtually useless because it did not take into account developments in radiology technology. With the publication of NCRP Report No. 147, the approach was corrected by giving shielding designers the ability to, in part, specify efficient barriers to diagnostic radiation settings. The NCRP Report 147 methodology for calculating radiation shielding requirements depend greatly on the shielding design goals (P) where a proposed design limit for controlled and uncontrolled areas is reduced to NCRP Report 49 levels. Further, the methodology most likely uses the concept of “dose constraint” in radiation installations as shielding design goals for the purpose of safety and protection optimization for occupational workers and the public. The previous NCRP Report 49 uses a very conservative…
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