FPGA Implementation and Evaluation of an Approximate Hilbert Transform-Based Envelope Detector for Ultrasound Imaging Using the DSP Builder Development Tool

Assef, Amauri Amorin; Oliveira, Jonathan de; Maia, Joaquim Miguel; Costa, Eduardo Tavares

doi:10.1109/embc.2019.8857671

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…The applications of the new methods involving adaptive ultrasound adaptive filters are relatively new and promising. With the development of the novel ultrasound platforms based on high-end devices FPGAs and GPUs, it is expected that such compute-intensive algorithms will be performed in hardware or divided into hybrid systems [3], [16].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Qualitative and quantitative comparison of simulated ultrasound images generated by delay-and-sum and minimum variance techniques

Kohler

Neves²,

Zimbico³

et al. 2023

18th International Symposium on Medical Information Processing and Analysis

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The beamforming technique has been successfully used for real-time ultrasound imaging and applications. Traditionally, the most commercially available ultrasound systems still implement standard Delay-and-Sum (DAS) beamforming for Bmode imaging. This technique performs the time delay and coherent summation of ultrasonic radiofrequency (RF) echoes received by individual transducer elements to align the backscattered signals at the focal point. However, the transducer aperture size and system operating frequency limit the image resolution and contrast achievable with DAS. For this reason, new methods based on adaptive beamforming algorithms, such as Minimum Variance (MV), have been studied to improve the quality of the signal received by the transducer and reduce the effects of noise and interference. This work compares a B-mode ultrasound image generated by the DAS technique and the MV combined with DAS beamforming using Field II acoustic field simulation software. A simulated phantom with 18 targets, separated into three groups, and surrounded by a uniform background, was created. For qualitative analysis, two-dimensional and three-dimensional images simulated using DAS and MV beamformers are presented. The quantitative analyses were employed to compare the performance of the MV over the DAS beamforming using axial and lateral full width at half maximum (FWHM) and geometric distortion ratio (GDR) measurements of the central target group. According to those metrics, no significant changes were observed regarding the axial FWHM. However, the MV method considerably reduced the lateral FWHM by more than 40%, with a minimum GDR of 37%.

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Section: Discussionmentioning

confidence: 99%

“…• Demodulation and envelope detection: these steps are applied to extract the final scanline from the echo carrier frequency range. Typically, the absolute value of the Hilbert Transform of the echo signal is used [16].…”

Section: Methodsmentioning

confidence: 99%

Qualitative and quantitative comparison of simulated ultrasound images generated by delay-and-sum and minimum variance techniques

Kohler

Neves²,

Zimbico³

et al. 2023

18th International Symposium on Medical Information Processing and Analysis

View full text Add to dashboard Cite

show abstract

“…The acquisition module performs the pre-processing and storage of the captured biosignal data using, for instance, complex field programmable gate array (FPGA)-based systems and/or low-cost open platforms. In this case, an Intel/Altera DE4 Development Board [ 88 ] and a Bitalino Board [ 76 ] are illustrated. Finally, the digital processing can be performed by high-end research platforms with a central processing unit (CPU)/graphics processing unit (GPU) [ 21 ], such as Verasonics Vantage [ 20 ], in a programmable environment (such as MATLAB or Python).…”

Section: Future Trendsmentioning

confidence: 99%

Multi-Sensing Techniques with Ultrasound for Musculoskeletal Assessment: A Review

Oliveira

Souza

Assef

et al. 2022

Sensors

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The study of muscle contractions generated by the muscle-tendon unit (MTU) plays a critical role in medical diagnoses, monitoring, rehabilitation, and functional assessments, including the potential for movement prediction modeling used for prosthetic control. Over the last decade, the use of combined traditional techniques to quantify information about the muscle condition that is correlated to neuromuscular electrical activation and the generation of muscle force and vibration has grown. The purpose of this review is to guide the reader to relevant works in different applications of ultrasound imaging in combination with other techniques for the characterization of biological signals. Several research groups have been using multi-sensing systems to carry out specific studies in the health area. We can divide these studies into two categories: human–machine interface (HMI), in which sensors are used to capture critical information to control computerized prostheses and/or robotic actuators, and physiological study, where sensors are used to investigate a hypothesis and/or a clinical diagnosis. In addition, the relevance, challenges, and expectations for future work are discussed.

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Implementation of an Ultrasound Data Transfer System via Ethernet with FPGA-Based Embedded Processing

Oliveira

Assef

Medeiros

et al. 2022

XXVII Brazilian Congress on Biomedical Engineering

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FPGA Implementation and Evaluation of an Approximate Hilbert Transform-Based Envelope Detector for Ultrasound Imaging Using the DSP Builder Development Tool

Cited by 10 publications

References 7 publications

Qualitative and quantitative comparison of simulated ultrasound images generated by delay-and-sum and minimum variance techniques

Qualitative and quantitative comparison of simulated ultrasound images generated by delay-and-sum and minimum variance techniques

Multi-Sensing Techniques with Ultrasound for Musculoskeletal Assessment: A Review

Implementation of an Ultrasound Data Transfer System via Ethernet with FPGA-Based Embedded Processing

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