Comparative survival of clonogenic cells of a murine epithelioma irradiated in vivo with 250 kVp x rays, /sup 60/Co gamma rays, or negative pions produced by the cyclotron at TRIUMF
Journal Article
·
· Radiology; (United States)
OSTI ID:5761273
Squamous carcinomas in WHT/Ht mice were exposed to the biomedical pion beam at TRIUMF. The biological effects of the pion beam were compared to those of 250 kVp x rays. The dose rates were 2 to 3 rad/min (.02 to .03 Gy/min) for pions and 56 rad/min (.56 Gy) for x rays. The surviving fraction of epithelioma cells irradiated in vivo was studied using the TD50 assay. RBE values for pions were calculated from the ratio of the x-ray and pion D/sub 0/ values and were found to be 1.6 +- 0.3 for oxic cells and 2.1 +- 0.4 for hypoxic cells. OER values were 1.8 +- 0.5 for pions and 2.4 +- 0.4 for 250 kVp x rays.
- Research Organization:
- Univ. of Tokyo, Japan
- OSTI ID:
- 5761273
- Journal Information:
- Radiology; (United States), Journal Name: Radiology; (United States) Vol. 133:2; ISSN RADLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
560152 -- Radiation Effects on Animals-- Animals
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACCELERATORS
ANIMALS
ANOXIA
BEAMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
BIOLOGY
COBALT 60
COBALT ISOTOPES
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
CYCLIC ACCELERATORS
CYCLOTRONS
DISEASES
ELECTROMAGNETIC RADIATION
ELEMENTS
EPITHELIOMAS
EXPERIMENTAL NEOPLASMS
FLUIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOCHRONOUS CYCLOTRONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MAMMALS
MEDICINE
MESON BEAMS
MICE
MINUTES LIVING RADIOISOTOPES
NEOPLASMS
NONMETALS
NUCLEAR MEDICINE
NUCLEI
ODD-ODD NUCLEI
OXYGEN
OXYGEN ENHANCEMENT RATIO
PARTICLE BEAMS
PION BEAMS
RADIATIONS
RADIOBIOLOGY
RADIOISOTOPES
RADIOLOGY
RADIOTHERAPY
RBE
RODENTS
THERAPY
TRIUMF CYCLOTRON
VERTEBRATES
X RADIATION
YEARS LIVING RADIOISOTOPES
560152 -- Radiation Effects on Animals-- Animals
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACCELERATORS
ANIMALS
ANOXIA
BEAMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
BIOLOGY
COBALT 60
COBALT ISOTOPES
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
CYCLIC ACCELERATORS
CYCLOTRONS
DISEASES
ELECTROMAGNETIC RADIATION
ELEMENTS
EPITHELIOMAS
EXPERIMENTAL NEOPLASMS
FLUIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOCHRONOUS CYCLOTRONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MAMMALS
MEDICINE
MESON BEAMS
MICE
MINUTES LIVING RADIOISOTOPES
NEOPLASMS
NONMETALS
NUCLEAR MEDICINE
NUCLEI
ODD-ODD NUCLEI
OXYGEN
OXYGEN ENHANCEMENT RATIO
PARTICLE BEAMS
PION BEAMS
RADIATIONS
RADIOBIOLOGY
RADIOISOTOPES
RADIOLOGY
RADIOTHERAPY
RBE
RODENTS
THERAPY
TRIUMF CYCLOTRON
VERTEBRATES
X RADIATION
YEARS LIVING RADIOISOTOPES