Computed tomographic x-ray velocimetry

S. Dubsky, R. A. Jamison, S. C. Irvine, K. K. W. Siu, K. Hourigan, A. Fouras

Research output: Chapter in Book/Report/Conference proceedingConference PaperOtherpeer-review

Abstract

An X-ray velocimetry technique is described which provides three components of velocity measurement in three-dimensional space. Current X-ray velocimetry techniques, which use particle images taken at a single projection angle, are limited to two components of velocity measurement, and are unable to measure in three dimensions without a priori knowledge of the flow field. The proposed method uses multiple projection angles to overcome these limitations. The technique uses a least-squares iterative scheme to tomographically reconstruct the three-dimensional velocity field directly from two-dimensional image pair cross-correlations, without the need to reconstruct three-dimensional particle images. Synchrotron experiments demonstrate the effectiveness of the technique for blood flow measurement in opaque vessels, with applications for the diagnosis and treatment of cardiovascular disease.

Original languageEnglish
Title of host publication6th International Conference on Medical Applications of Synchrotron Radiation (MASR 2010)
Subtitle of host publicationMelbourne, Australia, 15 – 18 February 2010
EditorsKaren K. W. Siu
Place of PublicationMelville, New York
PublisherAmerican Institute of Physics
Pages35-38
Number of pages4
ISBN (Print)9780735408135
DOIs
Publication statusPublished - 2010
Event6th International Conference on Medical Applications of Synchrotron Radiation, - Melbourne, Australia
Duration: 15 Feb 201018 Feb 2010
Conference number: 6

Publication series

NameAIP Conference Proceedings
PublisherAIP Publishing
Volume1266
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6th International Conference on Medical Applications of Synchrotron Radiation,
Abbreviated titleMASR 2010
CountryAustralia
CityMelbourne
Period15/02/1018/02/10

Keywords

  • Blood flow measurement
  • Least squares approximations
  • Synchrotrons
  • Tomography
  • Velocity measurement

Cite this