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Digital X-Ray

Services / Radiology / Digital X-Ray

Digital X-Ray

Digital radiography (DR) is an advanced form of x-ray inspection which produces a digital radiographic image instantly on a computer. This technique uses x-ray sensitive plates to capture data during object examination, which is immediately transferred to a computer without the use of an intermediate cassette. The incident x-ray radiation is converted into an equivalent electric charge and then to a digital image through a detector sensor.

What are the Advantages of Digital Radiography?

Digital radiography offer many advantages to the non-destructive testing community, including:

  • Shorter exposure times
  • Real-time applications
  • Use of analysis tool and defect recognition software
  • Improved detail detectability
  • Enhanced SNR and linearity
  • Reduced inspection time, as no chemical processing of film is required
  • Eliminates processing chemical, hence safe for environment
  • Digital image enhancement and data storage
  • Higher productivity
  • Portability
  • Increased dynamic range enables multiple thickness to be inspected in one shot.
  • Immediate feedback.
  • Easy to transfer to customers electronically.
  • Faster Processing Time. With traditional x-rays, it took quite some time to get the images ready.
  • Better Image Quality.
  • Demands Less Resources.
  • Allows for Higher Quality Care.
  • Relatively Easy to Use.
  • Quick Image Sharing.
  • Easy Image Storage.

What is the Difference Between Digital and Computed Radiography?

Digital radiography systems use active matrix flat panels or linear detector arrays, which consist of a detection layer deposited over an active matrix array of thin film transistors and photodiodes. Digital radiography images are converted to digital data in real-time and are available for analysis within seconds.

Instead of traditional x-ray film, computed radiography cassettes use photo-stimulated luminescence screens to capture the X-ray image. The computed radiography cassette goes into a reader, which converts the stored data into a digital image. Computed radiography imaging plates are flexible and do not require a rigid holder. Flexible cassettes are available that enable the detector to be fitted into curved areas.

While both computed radiography and digital radiography have a wider dose range and can be post processed to eliminate noise, DR has many advantages over computed radiography. Digital radiography improves workflow by producing higher image quality instantaneously while providing up to three times more dose efficiency than computed radiography. With ongoing technological advancements and reduction in price, digital radiography is fast becoming the preferred choice for non-destructive testing operators.

Digital Radiography Applications

As with all NDT processes, digital radiography as numerous applications, including:

  • Aerospace product examination
  • Detection of Corrosion Under Insulation (CUI) in petrochemical, oil and gas and power generation industries
  • Detection of Flow accelerated corrosion
  • Foreign object detection
  • Casting and weld inspection
  • Inspection of composites and fibre reinforced components
  • Product and process development

What is the difference between digital X-ray and normal X-ray?

While traditional X-rays are considered safe, digital X-rays produce 80% less radiation than traditional. This means it is highly unlikely you would develop issues from occasional traditional radiation exposure, but it is even less likely with the process used in digital X-rays.

Why are digital X-rays better?

Digital X-rays are like the digital cameras we have today. They still use X-rays as the standard X-rays; the only difference is that their sensors are connected to a computer and not a film. This enables the modern X-ray to capture clearer and more accurate images as compared to its predecessor.

How are digital X-rays taken?

The actual procedure for having a digital dental x-ray is very similar to a traditional x-ray.

What are the two types of digital radiography?

There are two types of digital imaging systems used in intraoral radiography – computed radiography (CR) and direct radiography (DR).

Does infection show up on xray?

X-rays use electromagnetic radiation to create pictures of the body. They may be used to identify the exact location of an infection. X-rays are also used to look for any changes in the bone or joint that may indicate a chronic infection.


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