scholarly journals Local speed of sound estimation in tissue using pulse-echo ultrasound: Model-based approach

2018 ◽  
Vol 144 (1) ◽  
pp. 254-266 ◽  
Author(s):  
Marko Jakovljevic ◽  
Scott Hsieh ◽  
Rehman Ali ◽  
Gustavo Chau Loo Kung ◽  
Dongwoon Hyun ◽  
...  
Keyword(s):  
Speed Of Sound ◽  
Model Based ◽  
Pulse Echo ◽  
Local Speed

Directional Cross-Correlation for Improved Aberration Phase Estimation in Pulse-Echo Speed-of-Sound Imaging

2021 ◽  
Author(s):  
Samuel Beuret ◽  
Baptiste Heriard-Dubreuil ◽  
Simon Canales ◽  
Jean-Philippe Thiran
Keyword(s):  
Speed Of Sound ◽  
Cross Correlation ◽  
Phase Estimation ◽  
Pulse Echo

scholarly journals Breast Cancer Assessment With Pulse-Echo Speed of Sound Ultrasound From Intrinsic Tissue Reflections

2019 ◽  
Vol 54 (7) ◽  
pp. 419-427 ◽  
Author(s):  
Lisa Ruby ◽  
Sergio J. Sanabria ◽  
Katharina Martini ◽  
Konstantin J. Dedes ◽  
Denise Vorburger ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Speed Of Sound ◽  
Pulse Echo

scholarly journals Thermophysical Properties of 1-Butanol at High Pressures

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5046
Author(s):  
Marzena Dzida
Keyword(s):  
Speed Of Sound ◽  
Thermophysical Properties ◽  
High Pressures ◽  
Fuel Additive ◽  
Temperature Range ◽  
Isobaric Thermal Expansion ◽  
Isentropic And Isothermal Compressibilities ◽  
Overlap Method ◽  
Pulse Echo ◽  
Better Than

1-Butanol can be considered as a good fuel additive, which can be used at high pressures. Therefore, the knowledge of high-pressure thermophysical properties is crucial for this application. In this paper, new experimental data on the speed of sound in 1-butanol in the temperature range from 293 to 318 K and at pressures up to 101 MPa are reported. The speed of sound at a frequency of 2 MHz was measured at atmospheric and high pressures using two measuring sets operating on the principle of the pulse–echo–overlap method. The measurement uncertainties were estimated to be better than ±0.5 m·s−1 and ± 1 m·s−1 at atmospheric and high pressures, respectively. Additionally, the density was measured under atmospheric pressure in the temperature range from 293 to 318 K using a vibrating tube densimeter Anton Paar DMA 5000. Using the experimental results, the density and isobaric and isochoric heat capacities, isentropic and isothermal compressibilities, isobaric thermal expansion, and internal pressure were calculated at temperatures from 293 to 318 K and at pressures up to 100 MPa.

The diffraction of blast. II

1950 ◽  
Vol 200 (1063) ◽  
pp. 554-565 ◽  
Keyword(s):  
Solid Surface ◽  
Speed Of Sound ◽  
Uniform Flow ◽  
Incident Shock ◽  
Plane Shock ◽  
Angle Of Incidence ◽  
Straight Segment ◽  
Reflected Shock ◽  
Perpendicular Distance ◽  
Local Speed

The head-on encounter of a plane shock, of any strength, with a solid corner of angle π - δ is investigated mathematically, when δ is small, by a method similar to that of part I. The incident shock is found to be reflected from each face as a straight segment, the two segments being joined by a shorter curved portion. Behind each straight segment is a region of uniform flow, the two regions being joined by one of non-uniform flow, bounded by arcs of a circle with centre at the corner, which expands at the local speed of sound, and by the shock, which is curved only where intersected by the said circle. The pressure is approximately equal in the two regions of uniform flow, but is less in the region of non-uniform flow between them; and it is found that if the deficiency of pressure therein, divided by the angle δ and by the excess of pressure behind the reflected shock over that of the atmosphere, be plotted at points along the solid surface, after the incident shock has travelled a given perpendicular distance beyond the corner, then the curve is independent of δ and of the precise angle of incidence of the shock, and changes remarkably little in the whole range of incident shock strengths from 0 to ∞ (see figures 5 to 8). It is suggested that some of the above qualitative conclusions may be true even if δ is not small. The case δ<0, when the corner is concave to the atmosphere, is also considered. Shock patterns are found in cases when the incident shock has already been reflected from one, or both, walls before reaching the corner (figures 9 to 11).

Speed of sound in pure liquids by a pulse-echo-overlap method

1986 ◽  
Vol 18 (7) ◽  
pp. 683-689 ◽  
Author(s):  
G Tardajos ◽  
M Diaz Peña ◽  
E Aicart
Keyword(s):  
Speed Of Sound ◽  
Overlap Method ◽  
Pulse Echo

scholarly journals Photoacoustic–ultrasonic dual-mode microscopy with local speed-of-sound estimation

2020 ◽  
Vol 45 (14) ◽  
pp. 3840
Author(s):  
Wentian Chen ◽  
Chao Tao ◽  
Nghia Q. Nguyen ◽  
Richard W. Prager ◽  
Xiaojun Liu
Keyword(s):  
Speed Of Sound ◽  
Dual Mode ◽  
Local Speed

Outdoor pulse echo speed of sound measurement for all ages.

2008 ◽  
Vol 124 (4) ◽  
pp. 2569-2569
Author(s):  
James M. Sabatier ◽  
Charles H. Sabatier ◽  
Celeste S. Taylor
Keyword(s):  
Speed Of Sound ◽  
Sound Measurement ◽  
Pulse Echo
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