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RADIOGRAPH QUALITY EVALUATION FOR EXPOSURE VARIABLES—A REVIEW
Author(s) -
Kirberger Robert M.
Publication year - 1999
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.1999.tb00352.x
Subject(s) - darkroom , radiography , medicine , visibility , chart , image quality , medical physics , quality (philosophy) , medical diagnosis , flow chart , artificial intelligence , radiology , computer science , engineering drawing , statistics , optics , image (mathematics) , philosophy , physics , mathematics , epistemology , engineering
Good quality radiographs are essential for making accurate diagnoses. Many factors influence the quality of radiographs including the x‐ray machine specifications and settings, the darkroom environment and processing, and the choice of ancillary x‐ray equipment (cassette properties, film/screen selection, use and properties of a grid). In compiling a technique chart, many of these variables are standardized so as to provide dependable guidelines for selecting the appropriate exposure settings (mAs and kVp) for a radiographic study. The systematic evaluation of image blackening, peripheral blackening, and the visibility of the gross image detail and contrast will facilitate the development of a technique chart as well as determining the source of the problem and necessary exposure setting changes for radiographs that are suboptimal. A flow diagram is described that will assist with the systematic evaluation of radiographic quality and provide guidelines for correcting exposure errors.