An Open-Source Test-Bench for Autonomous Ultrasound Imaging

Roman, Alex; Dehghanzadeh, Parisa; Pashaei, Vida; Basak, Abhishek; Bhunia, Swarup; Mandal, Soumyajit

doi:10.1109/mwscas.2018.8623834

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…This could be addressed by omitting the matching layers, as discussed in Section 3.2. For this work, a commercial 256-channel DAQ was used, but lower cost alternatives are available [22], or a multiplexer [42] could be built to sequentially switch a pulser between each transmit channel and an oscilloscope between each receive channel, since this equipment is widely available.…”

Section: Discussion and Summarymentioning

confidence: 99%

open-UST: An Open-Source Ultrasound Tomography Transducer Array System

Roberts¹,

Martin²,

Brown³

et al. 2023

Preprint

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Fast imaging methods are needed to promote widespread clinical adoption of Ultrasound Tomography (UST), and more widely available UST hardware could support the experimental validation of new measurement configurations. In this work, an open-source 256-element transducer ring array was developed (morganjroberts.github.io/open-UST) and manufactured using rapid prototyping, for only £2k. Novel manufacturing techniques were used, resulting in a 1.17 • mean beam axis skew angle, a 104 µm mean element position error, and a ±13.6 µm deviation in matching layer thickness. The nominal acoustic performance was measured using hydrophone scans and watershot data, and the 61.2 dB SNR, 55.4 • opening angle, 16.3 mm beamwidth and 54% transmit-receive bandwidth (-12 dB), were found to be similar to existing systems, and compatible with full waveform inversion reconstruction methods. The inter-element variation in acoustic performance was typically <10% without using normalisation, meaning that the elements can be modelled identically during image reconstruction, removing the need for individual source definitions based on hydrophone measurements. Finally, data from a phantom experiment was successfully reconstructed. These results demonstrate that the open-UST system is accessible for users, and suitable for UST imaging research.

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Section: Discussion and Summarymentioning

confidence: 99%

open-UST: An Open-Source Ultrasound Tomography Transducer Array System

Roberts¹,

Martin²,

Brown³

et al. 2023

Preprint

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“…Transmit/receive (T/R) switches are typically used, such as the LM96530 (Vasudevan, P. Govindan, and J. Saniie 2014), MAX14866 (Jonveaux 2021a) or the HV2605, HV2201, HV20220 (H. Li et al 2014) chips. Switches can be integrated at the pulser level (Worthing 2016;Hidayat et al 2020) or on the receiving path, for instance, using a LM96530 (Gwirc et al 2019;Roman et al 2018).…”

Section: Switchesmentioning

confidence: 99%

“…However, due to the increased accessibility of FPGAs, digital signal processors (DSPs) and systems-on-chip (SoCs) (for radio frequency signal processing) are strategic options. Along with the development of integrated AFE, these components have accelerated the creation and availability of high-end programmable research platforms (Roman et al 2018). In some designs, an additional microcontroller is set up between the FPGA and a USB bus (Pashaei, Roman, and Mandal 2018;Schneider et al 2010), which can provide the FPGA with a configuration on the fly and allow access to the computation platform to set up the pulse-echo sequence parameters (J. R. Raj, S. M. K. Rahman, and Anand 2017; J.…”

Section: Controllers Supported By the Development Of Open Source Fpgasmentioning

confidence: 99%

Review of Current Simple Ultrasound Hardware Considerations, Designs, and Processing Opportunities

Jonveaux¹,

Schloh

Meng

et al. 2022

Journal of Open Hardware

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Ultrasound is one of the most widely used imaging tools for non-destructive testing (NDT) and non-invasive medical diagnosis. Since its beginnings in the 1950s, ultrasound imaging research has led to innovations such as new sensors, signal processing, and hardware development. After more than fifty years, the field continues to evolve, aided by advances in electronics and digital hardware. However, the field remains underresearched in terms of experimental open-source hardware. An open, flexible, and cost-efficient platform is still needed for many basic medical and testing applications. A platform of this kind would support the efforts of researchers, makers, and device developers in accelerating ultrasound research and development.The aim of this review is to identify literature relevant to the understanding, design, and operation of simple ultrasound devices and to present this body of knowledge in a format that is easily accessible to ultrasound system designers. It also provides a summary of current ultrasound research to introduce readers to trends of interest.We capture design and use considerations from classical and modern instruments. We cover both NDT and medical applications, starting with a review of the design context, followed by a review of existing architectures and analog buildings blocks, followed by a survey of digital options available to support and complement the hardware.

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