Published on 26-Feb-2024

Best Practices for Implementing Computerized Radiography

Best Practices for Implementing Computerized Radiography

Table of Content


Introduction

In the field of NDT, the implementation or adoption of computerized radiography has revolutionized the way radiographic examinations are performed.

Computerized radiography (CR) systems also successfully replaced the conventional film-based methods and have a lot of advantages to offer such as increased productivity, improved quality of the image, and better data management. 

However, implementing Computed Radiography technology in non-destructive testing processes needs detailed planning and compliance with best practices to ensure optimal outcomes and maximize the usefulness of this progressive imaging method. 

This specific article aims to explore the best practices for implementing computerized radiography in Non-destructive Testing processes, covering important aspects such as quality control, training, system selection, and data management.

By pursuing these best practices, organizations can harness the full possibility of computerized radiography technology and attain incredible efficiency and accuracy in their radiographic examinations.

Computed Radiography technology

What is meant by Computed Radiography (CR)?

Computed Radiography, also known as CR, makes use of photo-stimulated luminescence to store the X-ray exposures.

First & foremost, a phosphor imaging plate is parked exactly behind the object and is then exposed to the penetration tradition directly. 

After that, this particular plate is scanned to develop a digital picture of the exposure by catching sight of the luminescence from the photostimulable luminescent phosphor of the plate. 

Computed Radiography helps in creating a picture similar to the traditional X-ray technique, but it uses distinct equipment, which is then scanned into a computer device as a digital library.

Computed Radiography (CR)

How Does Computed Radiography Work?

A Computed Radiography process makes use of barium fluoro bromide which further utilizes europium just like an activator.

Barium fluoro bromide tends to absorb the X-ray energy to develop a latent image. 

The emission of light or the process of photostimulable luminescence is utilized to disseminate the latent image into the computer. Now, the red light elicits the stored latent image and then it is transferred via the imaging plate to let it break out as a blue-colored light.

So, the blue light proceeds to get on a parabolic mirror or pentaprism, and the light energy is then redirected to a photomultiplier tube, which obtains the light. 

There is a photocathode, which is a scintillating component placed in front, which helps the blue light to be converted into electrons immediately. Next, the electrons rotate down to the photomultiplier tube through gating systems, known as dynodes. 

These dynodes further collect the electrons altogether and deliver them to an ADR (Analogue Digital Reader), which begins to develop a picture on the digital screen. 

Advantages of Computed Radiography Over Traditional Radiography

a) Computed Radiography makes use of the traditional X-ray room and companies that have an existing traditional X-ray set-up are not required to possess different X-ray rooms. 

b) There is a substantial reduction in the times of exposure in various cases, yet the energy required is exactly the same as traditional Radiography Testing.

c) Plus, there is a huge reduction in re-shots as disapproved of traditional radiography, because the technician obtains quick feedback from the shot.