Noise filtering in the total focusing method by decomposition of the time reversal operator and the virtual array approach

2013 ◽  
Author(s):  
S. Bannouf ◽  
S. Robert ◽  
O. Casula ◽  
C. Prada
Keyword(s):  
Time Reversal ◽  
Noise Filtering ◽  
Virtual Array

scholarly journals Non-invasive aberration correction and adaptive ultrasound imaging with a time reversal virtual array

2021 ◽  
Vol 88 (s1) ◽  
pp. s34-s36
Author(s):  
Lars Grüter ◽  
Richard Nauber ◽  
Jürgen Czarske
Keyword(s):  
Time Reversal ◽  
Model Experiment ◽  
Calibration Method ◽  
Wavefront Correction ◽  
Non Invasive ◽  
Numerical Characterization ◽  
Virtual Array ◽  
Multi Mode ◽  
Method Show

Abstract Strong acoustical aberrations such as induced by multi-mode waveguides or the human skull can significantly reduce the quality of or prevent effective ultrasoundbased imaging. We propose a novel non-invasive calibration method that utilizes two independent acoustical accesses and a time reversal virtual array (TRVA) for adaptive wavefront correction. Numerical characterization and a model experiment utilizing this method show an improvement of the lateral resolution and the peak to background ratio by up to 35% and 10% respectively.

scholarly journals C2.1 - Ultrasound imaging through multimode waveguides using time reversal virtual array method

2017 ◽  
Author(s):  
M. Kalibatas ◽  
R. Nauber ◽  
D. Dawidowski ◽  
L. Büttner ◽  
J. Czarske
Keyword(s):  
Ultrasound Imaging ◽  
Time Reversal ◽  
Virtual Array ◽  
Multimode Waveguides

Time Reversal in Lossy Material: An Assessment

PIERS Online ◽  
2006 ◽  
Vol 3 (8) ◽  
pp. 1259-1263
Author(s):  
Ian Scott ◽  
Ana Vukovic ◽  
Phillip Sewell
Keyword(s):  
Time Reversal ◽  
Lossy Material

Thermoacoustic imaging using time reversal

2007 ◽  
Author(s):  
Hubert Grün ◽  
Christian Hofer ◽  
Markus Haltmeier ◽  
Günther Paltauf ◽  
Peter Burgholzer
Keyword(s):  
Time Reversal ◽  
Thermoacoustic Imaging
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