ANALYSIS OF BEAMFORMING FROM VARIOUS TRANSDUCER SHAPE
Journal Title: Journal of Science And Arts - Year 2010, Vol 13, Issue 2
Abstract
Medical ultrasound data suffers from blur caused by the volume expansion of the pressure field of the mechanical wave. This blur is dependent on the used excitation signal and focusing of the ultrasonic wave and can therefore be examined and manipulated to compute a set of better parameters for deconvolution on the data in order to improve overall system resolution. Looking at the ultrasound transfer function we can focus on the examination of the “point spread function” and ways to influence its size especially in the lateral direction. A method of simulating sound pressure with the aid of the impulse response is applied to a various shaped ultrasonic radiators. We focus our attention on the peak appearance in the pressure response of the transducers.
Authors and Affiliations
LUMINITA MORARU, LAURA ONOSE
Keywords
Related Articles
- EP ID EP113367
- DOI -
- Views 192
- Downloads 0
THE ANALYSIS OF THE INTERFACIAL INSTABILITY CONDITIONS IN SYSTEMS<br /> LIQUID STEEL- REFINING SLAG
As consequences of the increasing needs of high quality steel products, besides the improvements of the actual technologies, applied in steel refining process using slugs a special attention is paid t...
THE RELATION BETWEEN INCIDENCE COALGEBRA AND PATH COALGEBRA OF A PARTIAL ORDERED SET
In the first part of the article are related some notion in a cathegoricaly way, like k-algebra and k-coalgebra, where k is a field. Then we construct the incidence coalgebra (kS,Δ,ε ) and path coalgebra (kQ,Δ',ε ') for...
SOME GRONWALL TYPE INEQUALITIES WITH APPLICATION IN DATA DEPENDENCE FOR FUNCTIONAL DIFFERENTIAL EQUATION
STUDY OF THE FINITE FINAL POINT OPTIMAL CONTROL PROBLEM
The paper presents a simple method for obtaining the analytical formula and the graphical representation of the trajectory and optimal control for a class of control problems, with fixed or free final state form.
SOME MODELS OF DISSIPATIVE PROCESSES IN PHASE TRANSFORMATIONS ON A WIDE RANGE OF TEMPERATURES
The phase transitions in solid materials (called solid-solid transformations) are connected with the thermo dynamical processes with hysteresis, leading to the dissipative models. Obvious, the liquid-solid transitions ar...