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 language | English |
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Title of host publication | 6th International Conference on Medical Applications of Synchrotron Radiation (MASR 2010) |
Subtitle of host publication | Melbourne, Australia, 15 – 18 February 2010 |
Editors | Karen K. W. Siu |
Place of Publication | Melville, New York |
Publisher | American Institute of Physics |
Pages | 35-38 |
Number of pages | 4 |
ISBN (Print) | 9780735408135 |
DOIs | |
Publication status | Published - 2010 |
Event | 6th International Conference on Medical Applications of Synchrotron Radiation, - Melbourne, Australia Duration: 15 Feb 2010 → 18 Feb 2010 Conference number: 6 |
Publication series
Name | AIP Conference Proceedings |
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Publisher | AIP Publishing |
Volume | 1266 |
ISSN (Print) | 0094-243X |
ISSN (Electronic) | 1551-7616 |
Conference
Conference | 6th International Conference on Medical Applications of Synchrotron Radiation, |
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Abbreviated title | MASR 2010 |
Country/Territory | Australia |
City | Melbourne |
Period | 15/02/10 → 18/02/10 |
Keywords
- Blood flow measurement
- Least squares approximations
- Synchrotrons
- Tomography
- Velocity measurement