Specific absorbed fractions of energy at various ages from internal photon sources: 5, Fifteen-year-old male and adult female
Specific absorbed fractions (PHI's) in various organs of the body (target organs) from sources of monoenergetic photons in various other organs (source organs) are tabulated. In this volume PHI-values are tabulated for a fifteen-year-old male or an adult female (55 to 58 kg). These PHI-values can be used in calculating the photon component of the dose-equivalent rate in a given target organ from a given radionuclide that is present in a given source organ. The International Commission on Radiological Protection recognizes that the endosteal, or bone surface, cells are the tissue at risk for bone cancer. We have applied the dosimetry methods developed for beta-emitting radionuclides deposited in bone to follow the transport of secondary electrons that were freed by photon interactions through the microscopic structure of the skeleton. With these methods we can estimate PHI in the endosteal cells and can better estimate PHI in the active marrow; the latter is overestimated with other methods of Snyder et al. at photon energies below 200 keV. 12 refs., 2 tabs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6263426
- Report Number(s):
- ORNL/TM-8381/V5; ON: DE87013349; TRN: 87-033044
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Includes 1 sheet of 48x reduction microfiche
- Country of Publication:
- United States
- Language:
- English
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62 RADIOLOGY AND NUCLEAR MEDICINE
FEMALES
ADULTS
LUNGS
DOSIMETRY
RADIATION DOSES
MALES
ADOLESCENTS
COMPUTERIZED SIMULATION
RADIOPHARMACEUTICALS
RADIATION DOSE DISTRIBUTIONS
REFERENCE MAN
SKELETON
CATALOGS
CRITICAL ORGANS
DOSE EQUIVALENTS
ENERGY ABSORPTION
INTERNAL IRRADIATION
MAN
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PHOTONS
RADIOTHERAPY
TISSUES
ABSORPTION
AGE GROUPS
ANIMALS
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DOCUMENT TYPES
DOSES
DRUGS
ELEMENTARY PARTICLES
IRRADIATION
LABELLED COMPOUNDS
MAMMALS
MASSLESS PARTICLES
MEDICINE
MOCKUP
NUCLEAR MEDICINE
ORGANS
PRIMATES
RADIOLOGY
RESPIRATORY SYSTEM
SIMULATION
STRUCTURAL MODELS
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655003* - Medical Physics- Dosimetry
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