An Image Quality Indicator Design for Radioscopy and Tomography
The use of radioscopy (real-time radiography in which film is replaced by an electronic imaging system) is limited by the availability of appropriate image quality indicators (IQIs). Available indicators (plaque and wire type [1,21) were designed for radiographic imaging where the source, imaging system (film), and specimen are stationary and the IQI plane is oriented normal to the flux of radiation. The improvement in productivity made possible by rotating the object during inspection in real-time is inhibited by the lack of an indicator that evaluates image quality as the specimen (and the associated IQI’s) are rotated.
KeywordsCopper Plate Radiation Transport Linear Attenuation Coefficient Film Radiograph Radiographic Projection
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- 1.ASTM Standard E747–87, “Standard Test Method for Controlling Quality of Radiographic Testing Using Wire Penetrameters”, 1988 Annual Book of ASTM Standards, Volume 03.03, Nondestructive Testing, pp. 316–321 (1988)Google Scholar
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