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Compressed quantitative acoustic microscopy

Kim, Jonghoon and Hill, Paul and Canagarajah, Nishan and Rohrbach, Daniel and Kouamé, Denis and Mamou, Jonathan and Achim, Alin and Basarab, Adrian Compressed quantitative acoustic microscopy. (2017) In: 2017 IEEE International Ultrasonics Symposium, 6 September 2017 - 9 September 2017 (Washington, United States).

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Official URL: https://doi.org/10.1109/ULTSYM.2017.8092328

Abstract

Scanning acoustic microscopy is a well-accepted modality for forming quantitative 2D maps of acoustic properties of soft tissues at microscopic scales. In our studies, the sample is raster-scanned with a spatial step size of 2 μm using a 250 MHz transducer resulting in 3D RF data cubes. Each RF signal is processed to obtain, for each spatial location, acoustic parameters, e.g., the speed of sound. The scanning time is directly dependent on the sample size and can range from few minutes to hours. In order to maintain constant experimental conditions for the sensitive thin sectioned samples, the scanning time is an important practical issue. Hence, the main objective of this work is to reduce the scanning time by reconstructing acoustic microscopy images from spatially under sampled measurements, based on the theory of compressive sampling. A recently proposed approximate message passing method using a Cauchy maximum a posteriori image denoising algorithm is thus employed to account for the non-Gaussianity of quantitative acoustic microscopy wavelet coefficients.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02860293
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > University of Bristol (UNITED KINGDOM)
Other partners > Riverside Research (USA)
Laboratory name:
Funders:
CIMI Labex - ProSmart Solutions
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Deposited On:08 Jun 2020 10:49

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