Synchronized time‐reversal focusing with application to virtual array formation, beam forming, and remote imaging

2006 ◽  
Vol 120 (5) ◽  
pp. 3007-3007
Author(s):  
Shane C. Walker ◽  
Philippe Roux ◽  
W. A. Kuperman
Keyword(s):  
Time Reversal ◽  
Beam Forming ◽  
Remote Imaging ◽  
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.

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