Title :
A study on ultrasound speckle reduction based on stochastic fluctuation of transmitted ultrasound beam
Author :
Suzuki, Hajime ; Tagawa, Norio ; Okubo, Kan
Author_Institution :
Grad. Sch. of Syst. Design, Tokyo Metropolitan Univ., Hino, Japan
Abstract :
Speckle suppression methods can be roughly divided into three categories: the first one is based on the statistical characteristics of a speckle, the second one uses multiple echoes measured in the different frequency bands, and the third one uses multiple echoes measured from the different directions respectively. However, each of those has shortcomings to be improved. On the other hand, the research in the engineering application of the mechanism of stochastic resonance has been advanced variously. Stochastic resonance can be viewed as a noise-induced enhancement of the response of a nonlinear system to a weak input signal, and naturally appears in many neural dynamics processes. In this study, we study a speckle suppression method based on the scheme of stochastic resonance.
Keywords :
biomedical ultrasonics; image denoising; medical image processing; speckle; stochastic processes; engineering application; frequency bands; multiple echoes; neural dynamics processes; noise-induced enhancement; nonlinear system response; speckle statistical characteristics; speckle suppression methods; stochastic fluctuation; stochastic resonance scheme; transmitted ultrasound beam; ultrasound speckle reduction; weak input signal; Compounds; Frequency measurement; Imaging; Speckle; Transducers; Ultrasonic imaging; Vibrations;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0234
