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Proceedings Paper

A fast and accurate method for echocardiography strain rate imaging
Author(s): Vahid Tavakoli; Nima Sahba; Nima Hajebi; Mohammad Saleh Nambakhsh
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Paper Abstract

Recently Strain and strain rate imaging have proved their superiority with respect to classical motion estimation methods in myocardial evaluation as a novel technique for quantitative analysis of myocardial function. Here in this paper, we propose a novel strain rate imaging algorithm using a new optical flow technique which is more rapid and accurate than the previous correlation-based methods. The new method presumes a spatiotemporal constancy of intensity and Magnitude of the image. Moreover the method makes use of the spline moment in a multiresolution approach. Moreover cardiac central point is obtained using a combination of center of mass and endocardial tracking. It is proved that the proposed method helps overcome the intensity variations of ultrasound texture while preserving the ability of motion estimation technique for different motions and orientations. Evaluation is performed on simulated, phantom (a contractile rubber balloon) and real sequences and proves that this technique is more accurate and faster than the previous methods.

Paper Details

Date Published: 27 March 2009
PDF: 12 pages
Proc. SPIE 7259, Medical Imaging 2009: Image Processing, 72592G (27 March 2009); doi: 10.1117/12.807568
Show Author Affiliations
Vahid Tavakoli, Univ. of Louisville (United States)
Nima Sahba, Islamic Azad Univ. (Iran, Islamic Republic of)
Nima Hajebi, Shahed Univ. (Iran, Islamic Republic of)
Mohammad Saleh Nambakhsh, Kings College London (United Kingdom)


Published in SPIE Proceedings Vol. 7259:
Medical Imaging 2009: Image Processing
Josien P. W. Pluim; Benoit M. Dawant, Editor(s)

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