1. Occupational Radiation Dose Management

2. ALARA As Low Reasonably Achievable
Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

3. X-Ray Attenuation of Lead Aprons
Equiv Thickness (mm Lead)
Wt (lb)
50 kVp
75 kVp
100 kVp
0.25
3-10 97 66 51
0.50
6-15
99.9 88 75
1.00
12-25 99 94
Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

4. Weighting Factors for Various Types of Radiation
Type of Energy Range
Radiation Weighting Factor (Wr)
X- and gamma rays, electrons 1
Neutrons, energy
< 10 keV 5
10 keV to 100 keV 10
>100 keV to 2 MeV 20
> 2 MeV to 20 MeV
>20 MeV
Protons 2
Alpha particles
Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

5. Legal Dose Limits in the United States
Annual mSv/yr (5000 mrem/yr)
Lens of the eye mSv/yr (15 rem/yr
Other organs mSv/yr (50 rem/yr)
Cumulative whole-body 10 mSv
(1000 mrem) × age
Pregnancy, entire 5 mSv (500 mrem)
Pregnancy, monthly 0.5 mSv (50 mrem)
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6. Occupational Radiation Monitoring
Film badges
Thermoluminescent dosimeters (TLD)
Optically stimulated luminescence (OSL) dosimeters
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7. Personal Radiation Monitors
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8. Thermoluminescent Dosimetry
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9. Optically Stimulated Luminescent Dosimeters
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10. Monitoring Pregnant Technologist
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