Response of LiF powder to /sup 125/I photons
Journal Article
·
· Med. Phys.; (United States)
OSTI ID:6103203
/sup 125/I seeds are being used to treat a variety of diseases, including brain tumors. However, the uncertainty in the energy response of LiF for /sup 125/I photons relative to megavoltage radiation limits the accuracy of dosimetry with this material. An array of 12 40-mCi /sup 125/I seeds was used to irradiate LiF powder in throwaway capsules, and an ion chamber was used to measure the absorbed dose. A comparison of the response of these LiF dosimeters with the response of capsules given a similar dose of /sup 60/Co radiation has yielded values of 1.39 +- 0.03 (dose to water) and 1.32 +- 0.03 (dose to muscle)= for the LiF response for /sup 125/I relative to that for /sup 60/Co. Details of the procedure and sources of uncertainty are discussed.
- Research Organization:
- Department of Radiation Oncology, University of California, San Francisco, California 94143
- OSTI ID:
- 6103203
- Journal Information:
- Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 11:6; ISSN MPHYA
- Country of Publication:
- United States
- Language:
- English
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Sat Sep 01 00:00:00 EDT 1990
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OSTI ID:6354000
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· International Journal of Radiation Oncology, Biology and Physics; (USA)
·
OSTI ID:6693379
Related Subjects
440102 -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
655003* -- Medical Physics-- Dosimetry
ALKALI METAL COMPOUNDS
BETA DECAY RADIOISOTOPES
CALIBRATION
DAYS LIVING RADIOISOTOPES
DOSEMETERS
DOSIMETRY
ELECTRON CAPTURE RADIOISOTOPES
FLUORIDES
FLUORINE COMPOUNDS
GAMMA DOSIMETRY
HALIDES
HALOGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPES
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
THERMOLUMINESCENT DOSEMETERS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
655003* -- Medical Physics-- Dosimetry
ALKALI METAL COMPOUNDS
BETA DECAY RADIOISOTOPES
CALIBRATION
DAYS LIVING RADIOISOTOPES
DOSEMETERS
DOSIMETRY
ELECTRON CAPTURE RADIOISOTOPES
FLUORIDES
FLUORINE COMPOUNDS
GAMMA DOSIMETRY
HALIDES
HALOGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPES
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
THERMOLUMINESCENT DOSEMETERS