Institute of Fundamental Technological Research
Polish Academy of Sciences

Staff

Damian Cacko, MSc

Department of Experimental Mechanics (ZMD)
PhD student
telephone: (+48) 22 826 12 81 ext.: 248
room: 537
e-mail:

Recent publications
1.  Cacko D., Lewandowski M., Shear Wave Elastography Implementation on a Portable Research Ultrasound System: Initial Results, Applied Sciences, ISSN: 2076-3417, DOI: 10.3390/app12126210, Vol.12, No.12, pp.6210-1-24, 2022

Abstract:
Ultrasound shear wave elastography (SWE) has emerged as a promising technique that enables the quantitative estimation of soft tissue stiffness. However, its practical implementation is complicated and presents a number of engineering challenges, including high-energy burst transmission, high-frame rate data acquisition and high computational requirements to process huge datasets. Therefore, to date, SWE has only been available for high-end commercial systems or bulk and expensive research platforms. In this work, we present a low-cost, portable and fully configurable 256-channel research system that is able to implement various SWE techniques. We evaluated its transmit capabilities using various push beam patterns and developed algorithms for the reconstruction of tissue stiffness maps. Three different push beam generation methods were evaluated in both homogeneous and heterogeneous experiments using an industry-standard elastography phantom. The results showed that it is possible to implement the SWE modality using a portable and cost-optimized system without significant image quality losses.

Keywords:
ultrasound imaging, shear wave elastography, high-frame rate imaging, medical system design

Affiliations:
Cacko D. - IPPT PAN
Lewandowski M. - IPPT PAN

Conference papers
1.  Ranachowski Z., Schabowicz K., Gorzelańczyk T., Lewandowski M., Cacko D., Katz T., Dębowski T., Investigation of Acoustic Properties of Fibre-Cement Boards, IEEE 2018, IEEE Joint Conference - Acoustics, 2018-09-11/09-14, Ustka (PL), DOI: 10.1109/ACOUSTICS.2018.8502341, pp.275-279, 2018

Abstract:
The paper describes two different techniques of ultrasound measurements performed in fibre cement boards, the material widely applied in building technology. An in-house device dedicated for fibre-cement board testing is also presented. To overcome the difficulty of determining the arrival time of the waveform of a longitudinal wave travelling across a thin and inhomogeneous body, a cross-correlation method of signal processing was proposed and applied

Keywords:
ultrasound, fibre-cement board, waveform cross correlation coefficient

Affiliations:
Ranachowski Z. - IPPT PAN
Schabowicz K. - Wroclaw University of Science and Technology (PL)
Gorzelańczyk T. - Wroclaw University of Science and Technology (PL)
Lewandowski M. - IPPT PAN
Cacko D. - IPPT PAN
Katz T. - IPPT PAN
Dębowski T. - IPPT PAN
2.  Cacko D., Walczak M., Lewandowski M., Low-Power Ultrasound Imaging on Mixed FPGA/GPU Systems, IEEE 2018, IEEE Joint Conference - Acoustics, 2018-09-11/09-14, Ustka (PL), DOI: 10.1109/ACOUSTICS.2018.8502371, pp.42-47, 2018

Abstract:
Portable and hand-held ultrasound imagers have the potential to revolutionize Point-of-Care medical diagnostics. There is great need for low-cost, portable scanners with extended battery life. In this paper, we focus on hardware-software partitioning in heterogeneous systems where both field-programmable gate array (FPGA) and graphics processing unit (GPU) resources are available. We present the architecture of a prototype test scanner for the evaluation of various hardware-software partitioning strategies. The system is equipped with the Intel Arria 10 FPGA and the Nvidia Tegra X2 mobile GPU. FPGA-based beamformers: Delay-and-Sum and Filtered Multiply-and-Sum, were implemented. These 32-channel beamformer blocks are integrated into a complete dataflow along with the data acquisition, RF filter, quadrature demodulator, and envelope detector. The designed dataflow allows one to allocate processing functions to either hardware (FPGA) or software (GPU) to explore various imaging scenarios and optimize power consumption. A dedicated measurement setup facilitates measuring power consumption of both FPGA and GPU. The developed setup will provide a reliable experimental system power characterization.

Keywords:
ultrasound imaging, ultrasound scanner, point-ofcare ultrasound, beamforming, low-power, FPGA, GPU processing

Affiliations:
Cacko D. - IPPT PAN
Walczak M. - IPPT PAN
Lewandowski M. - IPPT PAN

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