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A proposed simple model for estimating occupational radiation dose to staff from veterinary (18)F-FDG pet procedures.

Authors
Martinez-NE; Kraft-SL; Johnson-TE
Source
Health Phys 2014 May; 106(5):583-591
NIOSHTIC No.
20044359
Abstract
Several studies have been conducted concerning the radiation dose to hospital personnel from positron emission tomography (PET) radiopharmaceuticals, but to date only one parallel study has been conducted for veterinary staff. Veterinary patients present challenges not encountered with human patients, as they require anesthesia and therefore more intensive monitoring than human patients. This paper presents a simple model for estimating the effective radiation dose to veterinary staff using occupational dose data from PET studies at Colorado State University's (CSU) James L. Voss Veterinary Teaching Hospital. The model consists of three point sources within a soft tissue cylinder, and sample calculations are provided for estimating dose to nuclear medicine technologists and an anesthesia technologist based on four different sized dogs. The estimated doses are within the range of actual occupational doses published previously. There are different protocols for the sequence of events in veterinary PET, specifically the order of anesthesia induction and radiopharmaceutical injection. When F-FDG injection is performed prior to anesthesia induction, the estimated dose is between 1.5 and 3.6 times higher than the doses received if injection is done after anesthesia induction, although expected doses for both protocols are below occupational dose limits based on a case load of 100 veterinary patients per year. The model is based on the techniques used at CSU, but it can be modified for different hospitals as well as differently sized animals.
Keywords
Radiation; Veterinarians; Veterinary-medicine; Monitoring-systems; Monitors; Models; Exposure-levels; Author Keywords: exposure; occupational; health effects; modeling; dose assessment; positron emission tomography
Contact
Nicole E. Martinez; 1681 Campus Delivery, Fort Collins, CO 80523
CODEN
HLTPAO
Publication Date
20140501
Document Type
Journal Article
Email Address
n.martinez@colostate.edu.
Funding Type
Grant
Fiscal Year
2014
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-009229; M052014
Issue of Publication
5
ISSN
0017-9078
Source Name
Health Physics
State
CO
Performing Organization
University of Colorado, Denver
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