Multi-frequency ultrasound transducers for medical applications: a survey

Sun, Xue Li; Yan, Ji Peng; Li, Yue Feng; Liu, Honghai

doi:10.1007/s41315-018-0057-7

Cited by 21 publications

(9 citation statements)

References 106 publications

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“…In simple designs, single-frequency sensors capable of detecting frequencies from 1 MHz to 15 MHz are often used, leading to designs with ADCs ranging from 40 to 150 Msps, and from 10 to 14 bits. Multi-frequency (X. L. Sun et al 2018) devices have also been developed (Lukacs, Sayer, and S. Foster 1998;F. S. Foster et al 2009), and in some cases, "First In/First Out" (FIFO) buffers are used between the ADC and the controller (D. Yang et al 2009), for example with the AL422B.…”

Section: Analog-to-digital Converters (Adcs)mentioning

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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Section: Analog-to-digital Converters (Adcs)mentioning

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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show abstract

“…By contrast, the vertical stack configuration presents many advantages such as limited footprint dimensions, easy manufacturing process and total overlap of the low and high frequency sound fields. In the medical field, the dualfrequency transducers are widely researched to achieve harmonic imaging [18,19], second-order ultrasound field (SURF) imaging [20,21], and acoustic radiation force imaging (ARFI) [22][23][24], etc. In harmonic imaging and SURF imaging, the function of low frequency pulse is to manipulate the high frequency imaging pulse, with itself only transmitted but not received.…”

Section: Introductionmentioning

confidence: 99%

A novel pulse-echo piezoelectric transducer for detecting quasi-static component induced by an ultrasonic longitudinal wave

Lai,

Lu,

et al. 2023

Meas. Sci. Technol.

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For effectively detecting the quasi-static component (QSC) of an ultrasonic longitudinal wave, which is closely related to the elastic nonlinearity of material, we proposed a novel pulse-echo piezoelectric transducer consisting of a high-frequency piezoelectric wafer, a frequency selective isolation layer, a low-frequency piezoelectric wafer, and an acoustic backing. The high-frequency wafer generates the primary longitudinal wave (PLW) tone burst, while the high- and low-frequency wafers receive the pulse echo containing both the PLW component and QSC, respectively. We analyze the pulse-echo formation of the high-frequency PLW tone burst in a specimen, and conduct numerical simulations and experiments to validate the effectiveness of the proposed transducer. The results demonstrate that the low-frequency receiver is more efficient at detecting the QSC, even though the high-frequency wafer can also receive the echo of the QSC pulse. Specifically, the QSC pulse can still be detected by the low-frequency receiver when the high-frequency PLW tone burst is completely attenuated. The novel pulse-echo transducer proposed in this paper expands the design perspectives for transducers used in ultrasonic non-destructive testing.

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“…These ultrasound procedures utilize ultrasound waves (sound waves of a frequency greater than 20 kHz, which is the upper limit of human hearing) and use a range of frequencies (1.5–20 MHz) depending on their applications [ 10 , 11 ]. These ultrasound procedures need a special medium that can provide lubrication to the skin to aid the movement of the transducer on the skin and can replace air between the transducer and the patient’s skin because ultrasound waves have difficulty in traveling through the air due to very small acoustic impedance (0.004 MRayls) [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of Polymer-Based Ultrasound Gel and Its Application in Ultrasonography

Afzal

Zahid

Rehan

et al. 2022

Gels

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Ultrasound imaging is a widely used technique in every health care center and hospital. Ultrasound gel is used as a coupling medium in all ultrasound procedures to replace air between the transducer and the patient’s skin, as ultrasound waves have trouble in traveling through air. This research was performed to formulate an inexpensive alternative to commercially available ultrasound gel as it is expensive and imported from other countries. Different formulations with different concentrations of carbopol 980 (CAR 980) and methylparaben were prepared with natural ingredients such as aloe vera gel and certain available chemicals that have no harmful effects on the skin. To justify the efficiency of the formulations; necessary physicochemical characteristics such as visual clarity, homogeneity, transparency, skin irritation, antibacterial activity, pH, stability, spreadability, conductivity, acoustic impedance, viscosity, and cost were evaluated. Moreover, a comparison study was also conducted with commercially available ultrasound gel that was utilized as a control. All samples showed excellent transparency and no microbial growth. S1 was the only formulation that met all of the requirements for commercial ultrasound gel and produced images that were similar to those produced by commercial ultrasound gel. So, this formulation could be used as an alternative to expensive commercial ultrasound gel for taking images in hospitals and medical centers.

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Multi-frequency ultrasound transducers for medical applications: a survey

Cited by 21 publications

References 106 publications

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

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

A novel pulse-echo piezoelectric transducer for detecting quasi-static component induced by an ultrasonic longitudinal wave

Preparation and Evaluation of Polymer-Based Ultrasound Gel and Its Application in Ultrasonography

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