Single-Grating gamma ray imaging system

Chien Chou

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations


A time-varying, single-sinusoidal-grating coded aperture which is translated between the radiative source plane and the detector plane is discussed. To the detector, the aperture behaves as a variable frequency grating that scans the object over a two-dimensional frequency domain by changing its orientation and position. The summation filter back-projection algorithm has been used to reconstruct the image. The object letter 舠E舡 was reconstructed successfully. The tomographic imaging capabilities of this system are also discussed.

Original languageEnglish
Pages (from-to)4001-4004
Number of pages4
JournalJapanese Journal of Applied Physics
Issue number9 R
StatePublished - 09 1993
Externally publishedYes


  • Coded image
  • Computer tomography
  • Image reconstruction
  • Nuclear medicine


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