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A review of electronic portal imaging devices (EPIDs)
Author(s) -
Boyer Arthur L.,
Antonuk Larry,
Fenster Aaron,
Van Herk Marcel,
Meertens Harm,
Munro Peter,
Reinstein Larry E.,
Wong John
Publication year - 1992
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596878
Subject(s) - medical physics , medical imaging , clarity , computer science , imaging science , linear particle accelerator , medicine , physics , computer vision , artificial intelligence , optics , biochemistry , chemistry , beam (structure)
On‐line electronic portal imaging devices are beginning to come into clinical service in support of radiotherapy. A variety of technologies are being explored to provide real‐time or near real‐time images of patient anatomy within x‐ray fields during treatment on linear accelerators. The availability of these devices makes it feasible to verify treatment portals with much greater frequency and clarity than with film. This article reviews the physics of high‐energy imaging and describes the operation principles of the electronic portal imaging devices that are under development or are beginning to be used clinically.