Statistical reconstruction for X-ray micro-CT systems with noncontinuous detectors

Wojciech Zbijewski, Freek J. Beekman

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We compare statistical and analytical reconstruction methods for micro-CT systems employing noncontinuous, modular CCD detectors. By combining many cooled CCDs connected with straight tapering to columnar CsI crystals, such systems would be capable of overcoming some major limitations of CCD-based technology, ie. limited field of view, insufficient detection efficency at low exposures and blurring caused by fiber-optic coupling. When applied to such a modular setup, statistical reconstruction (SR) has the advantage that it simply ignores the missing projection data. Filtered Back Projection assumes a continuous detector and therefore requires interpolation to fill in the projection discontinuities. Both reconstruction methods result in images with significant artifacts when applied to a system with symmetric placement of gaps. This can be explained by the incompleteness of projection data inherent to this kind of configuration. When the gaps are placed asymmetrically, however, SR effectively removes the errors caused by detector discontinuities, whereas FBP still produces images polluted by streaks.

Original languageEnglish (US)
Title of host publication2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference
Number of pages4
StatePublished - Dec 1 2005
Externally publishedYes
EventNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
Duration: Oct 23 2005Oct 29 2005

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863


OtherNuclear Science Symposium Conference Record, 2005 IEEE
Country/TerritoryPuerto Rico

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging


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