Imaging Plate Design and Use for Radiographic Nondestructive Evaluation

Computed radiography systems require the proper choice of imaging plate for specific applications. Nondestructive testing requires that imaging plates produce acceptable image quality over a wide range of energy conditions, material types, material thicknesses, and configurations. The imaging plate type contributes to the overall image quality and is a key factor in determining productivity. This paper reviews the principles of storage phosphor imaging plates, and it explores the design contribution towards key image quality parameters such as sharpness, noise, and brightness. Usage criteria and guidelines for optimum image quality as a function of radiation level and type will be discussed for the various imaging plate types.

References
1. ASTM E 1815, “Standard Test Method for Classification of Film Systems for Industrial Radiography,” ASTM International. 2. ASTM E 2446, “Standard Practice for Classification of Computed Radiology Systems,” ASTM International. 3. Ewert, U., ASTM International Meeting, West Conshohocken, Pennsylvania, June 2013. 4. Mango, S., “Qualification of a Computed Radiography System’s Exposure Range for Optimum Image Quality,” ASNT, Orlando, October 2012. 5. LaCivita, K., and Ewert, U., “Equivalent Penetrameter Sensitivity as Applied to Computed Radiography,” Materials Evaluation, Volume 70, No. 8, pages 925–930, August 2012. 6. Ewert, U., Heyne, K., Zscherpel, U., Jechow., M, and Bavendiek, K., “Optimum Exposure Conditions for Computed Radiography Depending On Fixed Pattern Noise and Efficiency of Imaging Plate Scanner Systems,” QNDE, San Diego, July 2010
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