Radioscopy

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Description

A radiographic technique, in which the X-ray detector, different from a radiographic film, like a fluorescent screen sensitive to X-rays, coupled with an image intensifier and a video monitor, permits to get real time radiographic images. It can be used to make multi angle radiographs of 3D objects, in order to understand internal structures (statues, mummies, musical instruments, archaeological objects...). It could also be used for studying real time casting process dynamic, through the sides of the mould. As with conventional radiography, radioscopy is broadly applicable to any material or object through which a beam of penetrating radiation may be passed and detected including metals, stone, ceramics, wood… In addition to the benefits normally associated with radiography, radioscopic examination may be either a dynamic, filmless technique allowing the examination part to be manipulated and imaging parameters optimized while the object is undergoing examination, or a static, filmless technique wherein the examination part is stationary with respect to the X-ray beam. Different types of detection device are now available, like systems with digital detector arrays, or analogical component such as an electro-optic device or an analogical camera. Recent technology advances in the areas of camera techniques, and digital image processing provide acceptable sensitivity for a wide range of applications.

Synonyms and related terms

Radioskopie (Deut.); radioscopie (Fr.)

Additional information

  • ASNT Nondestructive Testing Handbook, Third Edition: Volume 4, Radiographic Testing
  • ASTM E1255 - 09 Standard Practice for Radioscopy

http://www.astm.org/Standards/E1255.htm