ASSESSING INTERNAL CONTAMINATION AFTER THE DETONATION OF A RADIOLOGICAL DISPERSION DEVICE USING A 2×2-INCH SODIUM IODIDE DETECTOR

Details

• Alternative Title:
  Radiat Prot Dosimetry
• Personal Author:
  Dewji, S. ; Hertel, N. ; Ansari, A.
• Description:
  The detonation of a radiological dispersion device may result in a situation where individuals inhale radioactive materials and require rapid assessment of internal contamination. The feasibility of using a 2×2-inch sodium-iodide detector to determine the committed effective dose to an individual following acute inhalation of gamma-emitting radionuclides was investigated. Experimental configurations of point sources with a polymethyl methacrylate slab phantom were used to validate Monte Carlo simulations. The validated detector model was used to simulate the responses for four detector positions on six different anthropomorphic phantoms. The nuclides examined included (241)Am, (60)Co, (137)Cs, (131)I and (192)Ir. Biokinetic modelling was employed to determine the distributed activity in the body as a function of post-inhalation time. The simulation and biokinetic data were used to determine time-dependent count-rate values at optimal detector locations on the body for each radionuclide corresponding to a target committed effective dose (E50) value of 250 mSv.
• Subjects:
  Adult Air Pollutants, Radioactive Anthropometry Article Child Computer Simulation Gamma Rays Humans Inhalation Exposure Monte Carlo Method Phantoms, Imaging Polymethyl Methacrylate Radiation Dosage Radiation Monitoring Radiation Protection Sodium Iodide Whole-Body Counting

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• Source:
  Radiat Prot Dosimetry. 155(3):300-316.
• Pubmed ID:
  23436621
• Pubmed Central ID:
  PMC5704924
• Document Type:
  Journal Article
• Funding:
  CC999999/Intramural CDC HHS/United States
• Volume:
  155
• Issue:
  3
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:615a3e84c4917ab0458d428d10bd3ccae744d8f50e33b5db357aeddc2fdf50d9
• Download URL:
  https://stacks.cdc.gov/view/cdc/50402/cdc_50402_DS1.pdf
• File Type:
  [PDF - 1.65 MB ]