Products & Services
Computed Radiography

Image Plate Scanner


What is CR Technology? How does it work?

Computed Radiography (CR) is the production of a digital image by using a Phosphor Imaging Plate (IP) in place of conventional film.

Key advantaged of CR include:

– IP's are re-usable
– No dark room or chemicals required
– Exposure and process times reduced 
– Easy work flow and image optimisation with D-Tect software
– Simple to share digital information and archive

The CR technology consists of a 3-step process.

The Image (storage) Plate (IP) is exposed with X-ray or Gamma radiation, which causes the IP phosphor layer in the plate to store the 
X-ray image. During the reading process of the plate in the scanner, a focused laser beam triggers the release of the stored image data 
in the form of visible light. The emitted light is detected, captured, and converted into electrical signals which are digitized and fi nally 
displayed as a digital image on the PC monitor. The internal in-line eraser purges the residual data from the IP, which is then ready for 
the next exposure.

What is important?

With film radiography the only variable is the film, with CR we have different IP's and the ability to adjust up to 4 parameters within the scanner to optimise the image quality to suit the required inspection task.

High definition Computed Radiography

DÜRR NDT is the first company worldwide that has developed a 12,5μm laser spot scanner that, with correspondingly high resolution phosphor storage imaging plates, has met all of the stringent requirements of EN 14784 and ASTM 2446. The combination of high resolution image plates and this HD-CR device achieves the unique Basic Spatial Resolution of 40μm over all system classes for the first time. (Certified by BAM)

Adjustable resolution

The HD-CR device gives the user the choice to select a 20 μm scan resolution for weld inspection, or 100 μm scan resolution for a CUI application where speed and a short exposure really are the prime requirements. The stepless scan resolution ensures that the correct settings can be set to suit the application and inspection needs.

Why CR-Technology from DÜRR NDT

DÜRR NDT is committed to deliver products perfectly tailored to meet the needs of the market.