scholarly journals Comparison of different attenuation compensation methods in the estimation of the ultrasound backscatter coefficient

2021 ◽  
Author(s):  
L. Castañeda-Martinez ◽  
Hassan Rivaz ◽  
I. M. Rosado-Mendez
Keyword(s):  
Backscatter Coefficient ◽  
Attenuation Compensation ◽  
Compensation Methods ◽  
Ultrasound Backscatter

Quantification of the backscatter coefficient in heterogeneous media: Comparison of attenuation compensation methods

2020 ◽  
Vol 148 (4) ◽  
pp. 2559-2559
Author(s):  
Laura Casta ñeda-Martinez ◽  
Timothy J. Hall ◽  
Noushin Jafarpisheh ◽  
Hayley Whitson ◽  
Hassan Rivaz ◽  
...  
Keyword(s):  
Heterogeneous Media ◽  
Backscatter Coefficient ◽  
Attenuation Compensation ◽  
Media Comparison ◽  
Compensation Methods

Comparison of attenuation compensation methods in the estimation of the backscatter coefficient of breast cancer

2021 ◽  
Vol 150 (4) ◽  
pp. A55-A55
Author(s):  
Laura Castañeda-Martinez ◽  
Hayley Whitson ◽  
Noushin Jafarpisheh ◽  
Jorge Castillo-Lopez ◽  
Hector Galvan-Espinosa ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Backscatter Coefficient ◽  
Attenuation Compensation ◽  
Compensation Methods

Attenuation compensation of ultrasound backscatter from human carotid plaque

2018 ◽  
Vol 144 (3) ◽  
pp. 1888-1888
Author(s):  
Sheronica L. James ◽  
Russell Fedewa ◽  
Heather Gornik ◽  
Sean Lyden ◽  
D. Geoffrey Vince
Keyword(s):  
Carotid Plaque ◽  
Attenuation Compensation ◽  
Ultrasound Backscatter ◽  
Human Carotid

scholarly journals Variability in Ultrasound Backscatter Induced by Trabecular Microstructure Deterioration in Cancellous Bone

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Xingxing Chou ◽  
Feng Xu ◽  
Ying Li ◽  
Chengcheng Liu ◽  
Dean Ta ◽  
...  
Keyword(s):  
Cancellous Bone ◽  
Fdtd Method ◽  
Bone Microstructure ◽  
Backscatter Coefficient ◽  
Backscatter Signal ◽  
Trabecular Microstructure ◽  
Ultrasound Backscatter ◽  
Ultrasonic Backscatter ◽  
The Relationship ◽  
Difference Time

To determine the relationship between the ultrasonic backscatter parameters and trabecular microstructural variations in cancellous bone, three erosion procedures were performed to simulate various changes in the cancellous bone microstructure. The finite difference time domain (FDTD) method was used to simulate the backscatter signal in cancellous bone. Ultrasonic backscatter properties were derived as functions of the porosity when the ultrasound incident directions were perpendicular and parallel to the major trabeculae direction (MTD), respectively. The variability in the apparent backscatter coefficient (ABC) and apparent integrated backscatter (AIB) due to the trabecular microstructure was revealed. Significant negative correlations between the backscatter parameters (ABC and AIB) and the porosity of the cancellous bone were observed. The simulations showed that the ABC and AIB were influenced by the direction of the trabecular microstructural variations. The linear regressions between the ultrasonic backscatter parameters (ABC and AIB) and the porosity showed significantly different slopes for three erosion procedures when they are ultrasonically perpendicular (for ABC, −1.22 dB, −0.98 dB, and −0.46 dB; for AIB, −0.74 dB, −0.69 dB, and −0.25 dB) and parallel (for ABC, −1.87 dB, −0.69 dB, and −0.51 dB; for AIB, −0.9 dB, −0.5 dB, and −0.34 dB) to the MTD. This paper investigated the relationship between ultrasonic backscatter and cancellous bone microstructure deterioration and indicated that the ultrasonic backscatter could be affected by cancellous bone microstructure deterioration direction.

Total attenuation compensation for backscatter coefficient estimation using full angular spatial compounding

Ultrasonics ◽  
2021 ◽  
Vol 114 ◽  
pp. 106376
Author(s):  
Andres Coila ◽  
Julien Rouyer ◽  
Omar Zenteno ◽  
Adam Luchies ◽  
Michael L. Oelze ◽  
...  
Keyword(s):  
Backscatter Coefficient ◽  
Spatial Compounding ◽  
Total Attenuation ◽  
Attenuation Compensation ◽  
Coefficient Estimation

Designing Time Delay Compensation Methods for Functional Modes Using Sensory Evaluation

2015 ◽  
Vol 135 (7) ◽  
pp. 755-764 ◽  
Author(s):  
Shuhei Shimizu ◽  
Yoshiki Ohno ◽  
Takahiro Nozaki ◽  
Kouhei Ohnishi
Keyword(s):  
Time Delay ◽  
Sensory Evaluation ◽  
Delay Compensation ◽  
Compensation Methods ◽  
Time Delay Compensation

Der Wald-Wild-Konflikt – was kann die Forstökonomie zur Lösung beitragen? (Essay)

2017 ◽  
Vol 168 (4) ◽  
pp. 181-185
Author(s):  
Marc Hanewinkel
Keyword(s):  
Forest Economics ◽  
Production Risk ◽  
Damage Compensation ◽  
Land Expectation Value ◽  
Compensation Methods ◽  
The Future ◽  
Single Tree Selection ◽  
Simplifying Assumptions ◽  
Forest Enterprises

The forest-game conflict – how can forest economics contribute to solve it? (Essay) Core parameters of forest economics such as land expectation value or highest revenue show that damage caused by wild ungulates can critically influence the economic success of forest enterprises. When assessing and evaluating the damage in order to calculate damage compensation, methods are applied in Germany that look either into the past (“cost value methods”) or into the future (“expected value methods”). The manifold uncertainties related to this evaluation over long-term production periods are taken into account within a framework of conventions through strongly simplifying assumptions. Only lately, the increased production risk due to game-induced loss of species diversity is also considered. Additional aspects that should be taken into account in the future are the loss of climate-adapted species, the change of the insurance values of forest ecosystems and the impossibility of specific management systems such as single-tree selection forestry due to the influence of game. Because of high transaction costs when assessing the damage, financial compensation should only be the “ultimate measure” and a meditation between stakeholder groups with the goal to find a cooperative solution before the damage occurs should be preferred.

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