Correction of image intensifier distortion for three-dimensional x-ray angiography

Beth A. Schueler, Xiaoping Hu

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

31 Scopus citations

Abstract

An algorithm has been developed to correct spatial distortion in image intensifier-based projections for three-dimensional (3D) angiographic reconstruction. A piecewise spatial warping technique is used to calculate a set of correction lookup tables which store the row and column subpixel spatial shifts, based on a reference grid image. Pixel amplitudes in the corrected image are determined from bilinear interpolation of the four surrounding pixels in the observed image. The method has been tested using an x-ray imaging chain with a 30-cm image intensifier positioned at various angular orientations and x-ray source distances. Prior to distortion correction, the maximum error between observed and expected reference point locations was found to be 14 mm. After correction, the maximum and mean errors were 0.23 mm and 0.053 mm, respectively.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsRichard L. Van Metter, Jacob Beutel
Pages272-279
Number of pages8
StatePublished - Dec 1 1995
EventMedical Imaging 1995: Physics of Medical Imaging - San Diego, CA, USA
Duration: Feb 26 1995Feb 27 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2432
ISSN (Print)0277-786X

Other

OtherMedical Imaging 1995: Physics of Medical Imaging
CitySan Diego, CA, USA
Period2/26/952/27/95

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Schueler, B. A., & Hu, X. (1995). Correction of image intensifier distortion for three-dimensional x-ray angiography. In R. L. Van Metter, & J. Beutel (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 272-279). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2432).