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VÉLOCIMÉTRIE D'IMAGES DE PARTICULES POUR IMAGERIE DE PROJECTION AUX RAYONS X
专利权人:
MONASH UNIVERSITY
发明人:
FOURAS, ANDREAS,DUBSKY, STEPHEN
申请号:
EP10816468
公开号:
EP2478379A4
申请日:
2010.09.16
申请国别(地区):
EP
年份:
2014
代理人:
摘要:
A 2D or 3D velocity field is reconstructed from a cross-correlation analysis of image pairs of a sample, without first reconstructing images of the sample spatial structure. The method can be implemented via computer tomographic X- ray particle image velocimetry, using multiple projection angles, with phase contrast images forming dynamic speckle patterns. Estimated cross-correlations may be generated via convolution of a measured autocorrelation function with a velocity probability density function, and the velocity coefficients iteratively optimised to minimise the error between the estimated cross-correlations and the measured cross-correlations. The method may be applied to measure blood flow, and the motion of tissue and organs such as heart and lungs.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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