Enhancement and associative restoration of electronic portal images in radiotherapy

G. Krell, H. R. Tizhoosh, T. Lilienblum, C. J. Moore, B. Michaelis

Research output: Contribution to journalArticlepeer-review


Electronic portal imaging devices use the high energy treatment beam to project the body interior of the patient during radiation onto a fluorescent screen that is scanned by a camera. Because of the imaging physics, the unprocessed images of very poor quality, but they are the only available information during treatment for observation of the patient's organs. This paper presents an approach that combines an associative restoration algorithm with a fuzzy image enhancement technique. By fusion of the electronic portal image (EPI) with a pre-treatment captured simulator image (SI) a higher image quality than by conventional techniques is achieved.

Original languageEnglish (US)
Pages (from-to)157-171
Number of pages15
JournalInternational Journal of Medical Informatics
Issue number2
StatePublished - Apr 1998


  • Associative restoration
  • Electronic portal images
  • Radiotherapy

ASJC Scopus subject areas

  • Health Informatics


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