Enhancement of low-dosage cine-angiographic image sequences using a modified expectation maximization algorithm

Cheuk L. Chan*, Aggelos K Katsaggelos, Alan Varteres Sahakian

*Corresponding author for this work

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

5 Scopus citations

Abstract

Clinical x-ray image sequences acquired through fluoroscopy systems may be corrupted by quantum mottle - a Poisson-distributed, signal-dependent noise that arises with a controlled x- ray dosage reduction in an attempt to lower the exposure to the patient and the medical staff. In this paper, an approach to temporally filter this sequence is presented. It relies on a joint estimation of the signal and the displacement field through a maximum likelihood approach. Implementation is done via a modified EM algorithm to facilitate a more tractable solution.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages290-298
Number of pages9
Editionpt 1
ISBN (Print)0819410187
StatePublished - Jan 1 1993
EventVisual Communications and Image Processing '92 - Boston, MA, USA
Duration: Nov 18 1992Nov 20 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Numberpt 1
Volume1818
ISSN (Print)0277-786X

Other

OtherVisual Communications and Image Processing '92
CityBoston, MA, USA
Period11/18/9211/20/92

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ASJC Scopus subject areas

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

Cite this

Chan, C. L., Katsaggelos, A. K., & Sahakian, A. V. (1993). Enhancement of low-dosage cine-angiographic image sequences using a modified expectation maximization algorithm. In Proceedings of SPIE - The International Society for Optical Engineering (pt 1 ed., pp. 290-298). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1818, No. pt 1). Publ by Int Soc for Optical Engineering.