Simulation of mechanical misalignments in a conebeam micro-CT system

I. Vidal-Migallön, M. Abella, A. Sisniega, J. J. Vaquero, M. Desco

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

Abstract

X-ray CT images usually show artefacts due not only to physical effects -e.g., beam hardening-, but also to misalignments that remain after mechanical calibration. These artefacts become particularly noticeable in the case of high spatial resolution systems and in hybrid systems, such as PETCT, SPECT-CT scanners, which rely on a correct registration of emission and CT data. Hence, slight mechanical misalignments affect the quality of the CT images and any attenuation correction methods or further quantification based on them. We implemented a computer simulator of these artefacts on a conebeam, flat-panel based micro-CT scanner. Using this simulator, we studied the effect of these different misalignments (pitch and roll tilts, skew and shifts) on reconstructed images.

Original languageEnglish (US)
Title of host publication2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Pages5007-5009
Number of pages3
DOIs
StatePublished - Dec 1 2008
Event2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany
Duration: Oct 19 2008Oct 25 2008

Publication series

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

Other

Other2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
CountryGermany
CityDresden
Period10/19/0810/25/08

ASJC Scopus subject areas

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

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    Vidal-Migallön, I., Abella, M., Sisniega, A., Vaquero, J. J., & Desco, M. (2008). Simulation of mechanical misalignments in a conebeam micro-CT system. In 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 (pp. 5007-5009). [4774364] (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2008.4774364