Improved ultrasound speckle motion tracking using nonlinear diffusion filtering

Abd El-Monem El-Sharkawy; Khaled Z. Abd-Elmoniem; Abou-Bakr M. Youssef; Yasser M. Kadah

doi:10.1117/12.428224

30 May 2001 Improved ultrasound speckle motion tracking using nonlinear diffusion filtering

Abd El-Monem El-Sharkawy, Khaled Z. Abd-Elmoniem, Abou-Bakr M. Youssef, Yasser M. Kadah

Proceedings Volume 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing; (2001) https://doi.org/10.1117/12.428224
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

Abstract

In speckle motion tracking, blood velocity magnitude and direction are estimated from speckle pattern changes between successive images based on either 2D correlation of sum- absolute-difference (SAD) methods. Even though these techniques have been proven useful for flow mapping applications, they suffer from bias effects in estimating due to the presence of clutter induced from structural motion. In this work, we propose a technique for reducing the clutter effect, and hence enhancing the robustness of velocity estimation. The proposed technique relies on separating the speckle from the underlying specular structures. The basic idea is to employ a speckle reduction strategy based on nonlinear coherent diffusion filtering to obtain speckle free image of vessels from an original B- mode. Then, subtracting such image from the original image, an image for speckle is obtained. Nonlinear coherent diffusion filtering has been proven successful in removing Rayleigh distributed speckle pattern resulting mainly from blood scatterers in B-mode images while preserving structural information. This allows such scattering pattern to be utilized more accurately in calculating the velocity using an ultrasound research system and velocity estimates were obtained using 2D correlation.

Citation Download Citation

Abd El-Monem El-Sharkawy, Khaled Z. Abd-Elmoniem, Abou-Bakr M. Youssef, and Yasser M. Kadah "Improved ultrasound speckle motion tracking using nonlinear diffusion filtering", Proc. SPIE 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing, (30 May 2001); https://doi.org/10.1117/12.428224

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available