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Title: Specific absorbed fractions of energy at various ages from internal photon sources: 2, One-year-old

Abstract

Specific absorbed fractions (PHI's) in various organs of the body (targets organs) from sources of monoenergetic photons in various other organs (source organs) are tabulated. In this volume PHI-values are tabulated for a one-year old or 9.8-kg person. 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 of Radiological Protection recognizes that the endosteal or bone surface, cells are the tissue at risk for bone cancer. We have applied the dosimetry methods that Spiers and co-workers 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 at photon energies below 200 keV. 12 refs., 2 tabs.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
6203023
Report Number(s):
ORNL/TM-8381/V2
ON: DE87013346
DOE Contract Number:
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Includes 1 sheet of 24x reduction microfiche
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; 62 RADIOLOGY AND NUCLEAR MEDICINE; CRITICAL ORGANS; RADIATION DOSES; LUNGS; DOSIMETRY; COMPUTERIZED SIMULATION; RADIOPHARMACEUTICALS; RADIATION DOSE DISTRIBUTIONS; REFERENCE MAN; SKELETON; CATALOGS; CHILDREN; DOSE EQUIVALENTS; ENERGY ABSORPTION; INFANTS; INTERNAL IRRADIATION; PHANTOMS; PHOTONS; RADIOTHERAPY; TISSUES; ABSORPTION; AGE GROUPS; BODY; DOCUMENT TYPES; DOSES; DRUGS; ELEMENTARY PARTICLES; IRRADIATION; LABELLED COMPOUNDS; MASSLESS PARTICLES; MEDICINE; MOCKUP; NUCLEAR MEDICINE; ORGANS; RADIOLOGY; RESPIRATORY SYSTEM; SIMULATION; STRUCTURAL MODELS; THERAPY; 655003* - Medical Physics- Dosimetry; 550604 - Medicine- Unsealed Radionuclides in Therapy- (1980-)

Citation Formats

Cristy, M., and Eckerman, K.F.. Specific absorbed fractions of energy at various ages from internal photon sources: 2, One-year-old. United States: N. p., 1987. Web. doi:10.2172/6203023.
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Cristy, M., & Eckerman, K.F.. Specific absorbed fractions of energy at various ages from internal photon sources: 2, One-year-old. United States. doi:10.2172/6203023.
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Cristy, M., and Eckerman, K.F.. Wed . "Specific absorbed fractions of energy at various ages from internal photon sources: 2, One-year-old". United States. doi:10.2172/6203023. https://www.osti.gov/servlets/purl/6203023.
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@article{osti_6203023,
title = {Specific absorbed fractions of energy at various ages from internal photon sources: 2, One-year-old},
author = {Cristy, M. and Eckerman, K.F.},
abstractNote = {Specific absorbed fractions (PHI's) in various organs of the body (targets organs) from sources of monoenergetic photons in various other organs (source organs) are tabulated. In this volume PHI-values are tabulated for a one-year old or 9.8-kg person. 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 of Radiological Protection recognizes that the endosteal or bone surface, cells are the tissue at risk for bone cancer. We have applied the dosimetry methods that Spiers and co-workers 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 at photon energies below 200 keV. 12 refs., 2 tabs.},
doi = {10.2172/6203023},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1987},
month = {Wed Apr 01 00:00:00 EST 1987}
}
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Technical Report:
View Technical Report (6.03 MB)
DOI:  10.2172/6203023
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    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 ten-year-old or 32-kg person. 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 that Spiers and co-workersmore » 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 at photon energies below 200 keV. 12 refs., 2 tabs.« less

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