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Digital and Computed Radiography: A Brief Introduction and Comparison

With the current technical advancements and the emergence of high-powered computers, sophisticated software, and most importantly the steady drop in prices, industrial radiographic testing (RT) is gradually shifting, though it is still a long way away from film radiography. Companies providing industrial radiography services now have two available choices: digital radiography (DR) and computed radiography (CR), which is a form of DR. While working on modernizing radiography practices, it is important for the user to carry out some basic research for choosing between DR and CR by weighing the abilities of each along with the needs of both the company and the clients. This article attempts to provide readers with a basic understanding of both DR and CR and covers the advantages and disadvantages of both. Furthermore, it provides readers with a comparison of both digital techniques and adds a comparison between digital (DR/ CR) imaging and conventional film.

References

ASTM, 2015, ASTM E2339: Standard Practice for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE), ASTM International, West Conshohocken, PA.

ASTM, 2018a, ASTM E2738 (13e1): Standard Practice for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE) for Computed Radiography (CR) Test Methods, ASTM International, West Conshohocken, PA.

ASTM, 2018b, ASTM E2767: Standard Practice for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE) for X-Ray Computed Tomography (CT) Test Methods, ASTM International, West Conshohocken, PA.

ASTM, 2020, ASTM E2699: Standard Practice for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE) for Digital Radiographic (DR) Test Methods, ASTM International, West Conshohocken, PA.

 

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