Dosimetry of pion therapy beams

Journal Article · Thu Sep 01 04:00:00 EDT 1977 · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.594326· OSTI ID:7219459

Smith, A R; Rosen, I I; Hogstrom, K R; Lane, R G; Kelsey, C A; Amols, H I; Richman, C; Berardo, P A; Helland, J A; Kittell, R S; Paciotti, M A; Bradbury, J N

Cellular, animal, and human radiobiology studies are in progress at the Los Alamos Meson Physics Facility as part of a joint University of New Mexico and Los Alamos Scientific Laboratory pion therapy project. To support these activities, dosimetry has been performed on many different pion beam configurations. The effect of both static and dynamic momentum spreaders and of collimators on beam profiles, depth-dose distributions, and peak-to-plateau ratios have been studied. The absorbed dose is obtained by the application of Bragg--Gray cavity theory to ionization chamber measurements. Calculations have been made for the effective W values and average mass-stopping-power ratios needed for the Bragg--Gray equation. Kerma corrections are applied to transform the dose from the chamber wall to dose in muscle.

• Research Organization: University of New Mexico, Cancer Research and Treatment Center, Albuquerque, New Mexico 87131
• OSTI ID: 7219459
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 4:5; ISSN MPHYA
• Country of Publication: United States
• Language: English

Related Subjects

560151 -- Radiation Effects on Animals-- Man
61 RADIATION PROTECTION AND DOSIMETRY
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
655003* -- Medical Physics-- Dosimetry
BEAMS
BOSONS
DISEASES
DOSIMETRY
ELEMENTARY PARTICLES
ENERGY TRANSFER
HADRONS
LET
MEDICINE
MESON BEAMS
MESONS
MOCKUP
NEOPLASMS
NUCLEAR MEDICINE
PARTICLE BEAMS
PHANTOMS
PION BEAMS
PION DOSIMETRY
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
RADIATION DOSE DISTRIBUTIONS
RADIOLOGY
RADIOTHERAPY
RBE
STRUCTURAL MODELS
THERAPY
TISSUE-EQUIVALENT MATERIALS