Monte Carlo Assessments of Absorbed Doses to the Hands of Radiopharmaceutical Workers Due to Photon Emitters

Conference · Thu Jan 01 00:00:00 EST 2009

OSTI ID:1011024

Ilas, Dan ^[1]; Eckerman, Keith F ^[1]; Karagiannis, Harriet ^[1]

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1. ORNL

This paper describes the characterization of radiation doses to the hands of nuclear medicine technicians resulting from the handling of radiopharmaceuticals. Radiation monitoring using ring dosimeters indicates that finger dosimeters that are used to show compliance with applicable regulations may overestimate or underestimate radiation doses to the skin depending on the nature of the particular procedure and the radionuclide being handled. To better understand the parameters governing the absorbed dose distributions, a detailed model of the hands was created and used in Monte Carlo simulations of selected nuclear medicine procedures. Simulations of realistic configurations typical for workers handling radiopharmaceuticals were performedfor a range of energies of the source photons. The lack of charged-particle equilibrium necessitated full photon-electron coupled transport calculations. The results show that the dose to different regions of the fingers can differ substantially from dosimeter readings when dosimeters are located at the base of the finger. We tried to identify consistent patterns that relate the actual dose to the dosimeter readings. These patterns depend on the specific work conditions and can be used to better assess the absorbed dose to different regions of the exposed skin.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1011024
• Resource Relation: Conference: 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 1), Atlanta, GA, USA, 20080413, 20080418
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS
CHARGED PARTICLES
COMPLIANCE
DOSEMETERS
MONITORING
MONTE CARLO METHOD
NUCLEAR MEDICINE
PERSONNEL
PHOTON TRANSPORT
PHOTONS
RADIATION DOSES
RADIATION MONITORING
RADIATION PROTECTION
RADIATIONS
RADIOISOTOPES
RADIOPHARMACEUTICALS
REGULATIONS
SHIELDING
TRANSPORT