title: Enhancement and associative restoration of electronic portal images in radiotherapy.
abstract: 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.
authors.affiliation: Institute for Measurement, Technology and Electronics, Otto-von-Guericke-University, Magdeburg, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Krell
authors.forename: H R
authors.initials: HR
authors.lastname: Tizhoosh
authors.forename: T
authors.initials: T
authors.lastname: Lilienblum
authors.forename: C J
authors.initials: CJ
authors.lastname: Moore
authors.forename: B
authors.initials: B
authors.lastname: Michaelis
mesh_terms: D000465:Algorithms; D001330:Electronic Data Processing; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*