A mathematical model of the nine-month pregnant woman for calculating specific absorbed fractions
Existing models that allow calculation of internal doses from radionuclide intakes by both men and women are based on a mathematical model of Reference Man. No attempt has been made to allow for the changing geometric relationships that occur during pregnancy which would affect the doses to the mother's organs and to the fetus. As pregnancy progresses, many of the mother's abdominal organs are repositioned, and their shapes may be somewhat changed. Estimation of specific absorbed fractions requires that existing mathematical models be modified to accommodate these changes. Specific absorbed fractions for Reference Woman at three, six, and nine months of pregnancy should be sufficient for estimating the doses to the pregnant woman and the fetus. This report describes a model for the pregnant woman at nine months. An enlarged uterus was incorporated into a model for Reference Woman. Several abdominal organs as well as the exterior of the trunk were modified to accommodate the new uterus. This model will allow calculation of specific absorbed fractions for the fetus from photon emitters in maternal organs. Specific absorbed fractions for the repositioned maternal organs from other organs can also be calculated. 14 refs., 2 figs.
- Research Organization:
- Oak Ridge Associated Universities, Inc., TN (USA)
- DOE Contract Number:
- AC05-76OR00033
- OSTI ID:
- 5847687
- Report Number(s):
- CONF-861123-9; ON: DE88001307
- Resource Relation:
- Conference: CEC/CEA international workshop on age-related factors in radionuclide metabolism and dosimetry, Angers, France, 26 Nov 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
07 ISOTOPES AND RADIATION SOURCES
BLADDER
RADIATION DOSES
FETUSES
MATHEMATICAL MODELS
UTERUS
DOSE EQUIVALENTS
DOSE RATES
MODIFICATIONS
PHANTOMS
PREGNANCY
RADIATION PROTECTION
REFERENCE MAN
RESPONSE MODIFYING FACTORS
RISK ASSESSMENT
WOMEN
ANIMALS
BODY
DOSES
FEMALE GENITALS
FEMALES
MAMMALS
MAN
MOCKUP
ORGANS
PRIMATES
STRUCTURAL MODELS
URINARY TRACT
VERTEBRATES
560151* - Radiation Effects on Animals- Man
655002 - Medical Physics- Radiation Source Calibration & Standardization