Applying Echoes Mean Frequency Shift for Attenuation Imaging in Tissue

2011 ◽  
pp. 97-104
Author(s):  
J. Litniewski ◽  
Z. Klimonda ◽  
A. Nowicki
Keyword(s):  
Frequency Shift ◽  
Mean Frequency ◽  
Attenuation Imaging

35Cl NQR Spectroscopy on Salts and Molecular Compounds of Trichloroacetic Acid

1986 ◽  
Vol 41 (1-2) ◽  
pp. 215-224 ◽  
Author(s):  
Winfried Fichtner ◽  
Axel Markworth ◽  
Norbert Weiden ◽  
Alarich Weiss
Keyword(s):  
Frequency Shift ◽  
Temperature Dependence ◽  
Linear Relation ◽  
Trichloroacetic Acid ◽  
Mean Frequency ◽  
35Cl Nqr ◽  
The Mean ◽  
Molecular Compounds

The temperature dependence of salts M(1)H(Cl3CCOO)2 and molecular compounds of trichloroacetic acid with amines and benzaldehydes, TCA · X, was studied,The data fit rather well to the known dependence of the mean frequency shift Δ <v(35Cl)> on the pkadifference of X with respect to TCA. A linear relation is observed between the bleaching out temperature Tb of the 35Cl NQR lines and Δ <v(35Cl)> for M(1)H(Cl3CCOO)2 and for TCA · X, X = benzaldehydes.

Correcting for focusing when estimating tissue attenuation from mean frequency shift

2009 ◽  
Author(s):  
Jerzy Litniewski ◽  
Ziemowit Klimonda ◽  
Marcin Lewandowski ◽  
Andrzej Nowicki ◽  
Elzbieta Szymanska
Keyword(s):  
Frequency Shift ◽  
Mean Frequency

On a new method in spectroscopy : laser-induced frequency shift of self-excited ion oscillations

1992 ◽  
Vol 2 (7) ◽  
pp. 1367-1372
Author(s):  
R. C. Bobulescu ◽  
M. A. Brǎtescu ◽  
C. Stǎnciulescu ◽  
G. Musa
Keyword(s):  
Frequency Shift ◽  
New Method ◽  
Spectroscopy Laser

Research of the Brillouin frequency shift damage dependence from mechanical stresses in an optical sensor

2019 ◽  
Vol 9 (5) ◽  
pp. 512-521
Author(s):  
Ruslan V. Aginey ◽  
◽  
Rustem R. Islamov ◽  
Alexander A. Godunov ◽  
◽  
...  
Keyword(s):  
Frequency Shift ◽  
Optical Sensor ◽  
Mechanical Stresses
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