title: Evaluation of a photon and an electron beam of a 6-MV linear accelerator.
abstract: The first Mitsubishi medical linear accelerator in the United States was commissioned in April 1985. This unit EXL-8 (marketed by Mitsubishi International Corporation) produces 8-MeV electron beams in addition to 6-MV x rays. It is a 100-cm source-axis distance isocentric machine. Acceptance testing and performance evaluation of this accelerator were completed. Our measurements included beam characteristics and dosimetry parameters for both modalities. Central axis % depth dose (% DD), tissue-maximum ratio, field size output factors, wedge factors, etc., for this Linac 6-MV beam, are reported. Characteristics of the 8-MeV electron beam, namely % DD data, isodose curves, and cone ratios for various electron applicators are presented.
authors.affiliation: University of Louisville, James Graham Brown Cancer Center, Kentucky 40202.
authors.forename: S C
authors.initials: SC
authors.lastname: Sharma
authors.forename: P
authors.initials: P
authors.lastname: Modur
authors.forename: R
authors.initials: R
authors.lastname: Basavatia
mesh_terms: D004583:Electrons; D006801:Humans; D008962:Models, Theoretical; D009369:Neoplasms / Q000532:radiotherapy; D010315:Particle Accelerators; D011827:Radiation; D011878:Radiotherapy / Q000295:instrumentation* / Q000379:methods*; D011879:Radiotherapy Dosage