Phase-contrast tomography and the local tomography problem

Mark A. Anastasio, Francesco De Carlo, Xiaochuan Pan

Research output: Contribution to journalConference articlepeer-review


Phase-contrast tomography is a non-interferometric imaging technique for reconstructing the refractive index distribution of a weakly absorbing object from a set of tomographic projection measurements. In many practical situations, it is desirable to minimize the field of view (FOV) of the imaging system in order to increase the spatial resolution of the reconstructed image. When the object of interest is larger than the FOV, the measured projections are truncated and one is faced with a local tomography reconstruction problem. In this work, we investigate the local tomography problem for phase-contrast tomography and propose a simple algorithm for reconstructing image boundaries from untruncated and truncated phase-contrast projection data. Simulation studies are presented to corroborate our theoretical findings.

Original languageEnglish (US)
Pages (from-to)120-126
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5030 I
StatePublished - Sep 15 2003
Externally publishedYes
EventMedical Imaging 2003: Physics of Medical Imaging - San Diego, CA, United States
Duration: Feb 16 2003Feb 18 2003


  • Image reconstruction
  • Local tomography
  • Phase-contrast tomography
  • Synchrotron radiation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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