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Author Bagne, F.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword Particle Accelerators-Experimental Facilities ♦ Engineering-Facilities & Equipment ♦ Particle Accelerators-Auxiliaries & Components- Experimental Facilities & Equipment ♦ BETATRONS- IRRADIATION DEVICES ♦ ELECTRON BEAMS- ISODOSE CURVES ♦ LUNGS- ELECTRON DOSIMETRY ♦ MEV RANGE 10-100 ♦ PHANTOMS ♦ RADIOTHERAPY
Abstract Some of the physical parameters necessary in electron beam treatment planning are investigated for 5- to 45-MeV electrons extracted from a Brown-- Boveri betatron. The percent depth ionization (PDI) curves are compared with the empirical relation given by Laughlin's equation, and an extension of Laughlin's equation is described. The modified absorption coefficient (MAC) method is introduced to correct the isodose distributions for the presence of inhomogeneities, such as lung, with the actual density of lung and the location of the inhomogeneity taken into consideration. Experimental data from measurements made in a water-cork phantom are presented, and the results are compared with the various calculated methods. (AIP)
Educational Use Research
Learning Resource Type Article
Publisher Date 1976-01-01
Publisher Place United States
Journal Med. Phys.
Volume Number 3
Issue Number 1
Organization Radiation Therapy Department, Dartmouth-Hitchcock Medical Center, Hanover, New Hampshire 03755


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