Pulse echo method and apparatus for sound velocity estimation in vivo

1989 ◽  
Vol 86 (3) ◽  
pp. 1212-1212
Author(s):  
Jonathan Ophir
Keyword(s):  
Sound Velocity ◽  
Velocity Estimation ◽  
Pulse Echo ◽  
Pulse Echo Method

Ultrasonic Attenuation Measurements of in Vivo Human Muscle

1982 ◽  
Vol 4 (3) ◽  
pp. 290-295 ◽  
Author(s):  
J. Ophir ◽  
N. F. Maklad ◽  
R. H. Bigelow
Keyword(s):  
Analysis Of Variance ◽  
Ultrasonic Attenuation ◽  
Human Muscle ◽  
Normal Range ◽  
Attenuation Coefficients ◽  
Quadriceps Femoris Muscle ◽  
Pulse Echo ◽  
Pulse Echo Method ◽  
Femoris Muscle

Attenuation measurements were performed on the quadriceps femoris muscle of 10 normal volunteers. The measurements were made using a statistical narrowband pulse echo method operating at 4.3 MHz. The results show a normal range of 4.71 ± 0.44 dB cm-1 (mean ± S.D.). A one-way analysis of variance was performed on the data which concluded that the populations of attenuation coefficients among the subjects were indeed distinct at the p < 0.0005 level.

Effect of Bi2O3 on Elastic Properties of Silica Bismuthate Glasses by Pulse-Echo Method

2012 ◽  
Vol 2 (5) ◽  
pp. 546-548
Author(s):  
P. Vasantharani P. Vasantharani ◽  
◽  
I.Sankeeda I.Sankeeda
Keyword(s):  
Elastic Properties ◽  
Pulse Echo ◽  
Pulse Echo Method
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