Occupational Radiation Dose Management

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

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.

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.

Legal Dose Limits in the United States Annual 50 mSv/yr (5000 mrem/yr) Lens of the eye 150 mSv/yr (15 rem/yr Other organs 500 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) Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

Occupational Radiation Monitoring Film badges Thermoluminescent dosimeters (TLD) Optically stimulated luminescence (OSL) dosimeters Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

Personal Radiation Monitors Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

Thermoluminescent Dosimetry Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

Optically Stimulated Luminescent Dosimeters Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.

Monitoring Pregnant Technologist Elsevier items and derived items © 2009 by Mosby, Inc., an affiliate of Elsevier Inc.