D5.4 Compensation of Strong Aberrations with a Time Reversal Virtual Array for Ultrasound Imaging

Event
SMSI 2020
-
(did not take place because of Covid-19 virus pandemic)
Band
SMSI 2020 - Measurement Science
Chapter
D5 Advanced Methods & Measurement Systems
Author(s)
L. Grüter, R. Nauber, C. Kupsch, J. Czarske - TU Dresden, Dresden (Germany)
Pages
299 - 300
DOI
10.5162/SMSI2020/D5.4
ISBN
978-3-9819376-2-6
Price
free

Abstract

Ultrasound-based imaging represents an inexpensive and mobile alternative to x-ray-based techniques for medical diagnosis of stroke. However, skull-induced acoustical aberrations need to be compensated to maintain image quality. We propose a non-invasive calibration method that utilizes two independent acoustical accesses and a time reversal virtual array (TRVA). The proposed method is characterized in a model experiment and results in an improvement of the lateral resolution and the peak to background ratio by 35% and 10% respectively.

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