A Comparative Study of Digital Filtering Techniques in Ultrasound and Carotid Bifurcation Atherosclerosis

Digital Object Identifier 10.32754/JMT.2018.1.01 5 Abstract—The current paper presents a method for speckle cancellation in digital images obtained in ultrasound and carotid bifurcation atherosclerosis. Filtering techniques are usually used for noise reduction and contrast enhancement in digital images. Due to interferences and other phenomena in the acquisition chain, ultrasound images usually have perturbations and artifacts. Speckle is often considered a powerful source of noise in the ultrasound imagery and it must be filtered without affecting the rest of the most important features in the image. Linear, nonlinear, diffusion and wavelet filters are applied on various ultrasound images of carotid bifurcation. In order to evaluate the quality difference between original and anti-speckle filtered images, a comparative study of results is presented at the end.