BACKGROUND In breast ultrasound elastography, tissues displacements estimation is obtained through a technique that follows the evolution of tissues under stress. However, during the acquisition of B-mode images, tissue displacements are often contaminated with multiplicative noise caused by changes in the speckle pattern in the tissue. Thus, the application of monogenic signal technique on the...

Echocardiography is a common non-invasive diagnostic image modality that uses ultrasound to capture the structure and the function of the heart. During the last years there has been a growing need to automate the process of cardiac ultrasound images, involves many tasks, which such as image view classification, wall motion analysis, automatic placement of the Doppler gate over the valves, etc. ...

BACKGROUND Strain and strain rate have been proposed as tools to quantify regional myocardial function. One of the major pitfalls of the current methodology is its angle dependency. To overcome this problem, we have developed a new method for the estimation of strain, independent of angle. The aim of this study was to validate this new methodology in an experimental setting using sonomicrometry...

BACKGROUND The purpose of this was to find a staging strategy sensitive enough to reduce the risk of occult metastases in cN0 head and neck cancer to below 15% to 20%. METHODS A total of 73 articles were selected for analysis of the diagnostic performance in staging cN0 head and neck cancer. Hypothetical estimation of negative predictive value (NPV) was calculated based on the Bayesian theory...

Most quasi-static ultrasound elastography methods image only the axial strain, derived from displacements measured in the direction of ultrasound propagation. In other directions, the beam lacks high resolution phase information and displacement estimation is therefore less precise. However, these estimates can be improved by steering the ultrasound beam through multiple angles and combining di...

PURPOSE The aim of the study was to determine the detection rate of structural abnormalities at the 11-14 week ultrasound examination as a part of two-stage screening process in low-risk pregnancies. MATERIALS AND METHODS A total of 1085 consecutive low-risk pregnant women participated in screening by two-stage ultrasonography for the estimation of the sensitivity of the first and second trim...

Estimation of the tissues mechanical properties of is an important information to the pathologies diagnosis. A novel ultrasound-based methods use shear wave dispersion for this purpose. This paper describes the Magneto Motive Ultrasound (MMUs) implementation to evaluate mechanical parameters of paraffin phantoms. This technique can be applied in vivo as an alternative to biopsy. Ultrasound equi...