Evaluation of several film/screen combinations for megavoltage radiation therapy treatment field verification

Indra J. Das, Edwin C. McCullough, Francis Weber

Research output: Contribution to journalArticle


The introduction of a lower cost alternative to a film commonly used for megavoltage radiation therapy port films led to a comparison of two films (Kodak X-TL and X-OMAT G) in four metal screen cassette configurations. In addition to determination of H-D curves and point spread functions, images of humanoid phantom sections were obtained and evaluated for clinical "usefulness." The X-OMAT G film-screen combinations compared favorably with the X-TL film combinations with respect to the H-D Curves and point spread functions but there was a slight preference for X-TL film. There were no differences noted whether the film was used in the standard "ready pack" or naked in the cassettes.

Original languageEnglish (US)
Pages (from-to)95-97
Number of pages3
JournalMedical Dosimetry
Issue number2
StatePublished - 1988



  • Megavoltage therapy, imaging
  • Megavoltage therapy, port films
  • Screen-film combinations, radiation therapy

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Oncology
  • Radiology Nuclear Medicine and imaging

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