Weighting the Passive Acoustic Mapping Technique With the Phase Coherence Factor for Passive Ultrasound Imaging of Ultrasound-Induced Cavitation

Weighting the Passive Acoustic Mapping Technique With the Phase Coherence Factor for Passive Ultrasound Imaging of Ultrasound-Induced Cavitation

Ultrasound (US) cavitation is currently being explored for low-invasive therapy techniques applied to a wide panel of pathologies. Because of the random behavior of cavitation, a real-time spatial monitoring system may be required. For this purpose, the US passive imaging techniques have been recent...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control Vol. 65; no. 12; pp. 2301 - 2310
Main Authors: Boulos, Paul, Varray, Franois, Poizat, Adrien, Ramalli, Alessandro, Gilles, Bruno, Bera, Jean-Christophe, Cachard, Christian
Format: Journal Article
Language:English
Published: United States IEEE 01-12-2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
Subjects:
Acoustic mapping
Acoustics
Array signal processing
Beamforming
Bioengineering
Cavitation
Coherence
Engineering Sciences
Image reconstruction
Imaging
Imaging techniques
Life Sciences
Medical treatment
Passive acoustic mapping (PAM)
Passive imaging
Phase coherence
phase coherence factor (PCF)
Quantitative Methods
Signal and Image processing
Ultrasonic imaging
ultrasound (US) cavitation
Ultrasonic imaging
Phase Coherence Factor
Array signal processing
Medical treatment
Imaging
Coherence
Passive Acoustic Mapping
Ultrasound Cavitation
Acoustics
Image reconstruction
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Summary:Ultrasound (US) cavitation is currently being explored for low-invasive therapy techniques applied to a wide panel of pathologies. Because of the random behavior of cavitation, a real-time spatial monitoring system may be required. For this purpose, the US passive imaging techniques have been recently investigated. In particular, the passive acoustic mapping (PAM) beamforming method enables the reconstruction of cavitation activity maps by beamforming acoustic signals passively recorded by an array transducer. In this paper, an optimized version of PAM, PAM weighted with a phase coherence factor (PAM-PCF), is considered. A general validation process is developed including simulations on a point source and experiments on a wire. Furthermore, using a focused regulated US-induced cavitation generator, reproducible cavitation experiments are conducted in water and in agar gel. The spatial behavior of a bubble cavitation cloud is determined using the PAM-PCF beamforming method to localize the focal cavitation point in two perpendicular imaging planes.
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ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2018.2871983