Technology

You must have had an X-ray in a hospital or a clinic. Phase contrast technology is now attracting attention as an innovative technique in X-ray. Before explaining phase contrast technology, the outline of X-rays will be described. The X-ray absorption difference (absorption contrast) of the body structure (such as bones and muscles) are recorded to films as image information by setting a cassette that works as X-ray film for a patient and radiating X-rays, as shown in Fig. 1. X-rays are then derived through the development process.

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The CR System has a variety of image processing capabilities. The existing processing outline is as follows:

• Automatic gradation processing (G processing)
  • Automatically adjust density to be fit for the body part concerned
• Frequency processing (F or HF processing)
  • F processing emphasizes specific fineness.
  • HF processing emphasizes multiple fineness types. HF processing has more variations in emphasis degrees and patterns.
• Equalization processing (E or HE processing)
  • Emphasize the difficult-to-see part.

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