Recent advances in X-ray phase imaging

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Since the middle of the 1990s, X-ray phase imaging including phase tomography has been attracting increasing attention. The advantage of X-ray phase imaging is that an extremely high sensitivity is achieved for weak-absorbing materials, such as biological soft tissues, which generate a poor contrast by conventional methods. Medical and biological imaging is the main target of X-ray phase imaging, and several trials using synchrotron radiation sources and laboratory sources have been made. Measuring and controlling the X-ray phase are also significant for X-ray microscopy with a high spatial resolution, and innovative techniques are attracting intense interest. The progress of X-ray phase imaging is supported by the developments in X-ray sources such as third-generation synchrotron radiation sources, optical elements, and image detectors. This article describes the advantages of using X-ray phase information and reviews various techniques studied for X-ray phase imaging.

Original languageEnglish
Pages (from-to)6355-6367
Number of pages13
JournalJapanese Journal of Applied Physics
Issue number9 A
Publication statusPublished - 2005 Sept 8


  • Coherency
  • Interference
  • Interferometer
  • Phase contrast
  • Phase retrieval
  • Synchrotron radiation
  • Tomography
  • X-ray microscopy
  • X-rays


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