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Recent Advances in Ultrasound Sensors and Electronics for Medical Imaging Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Intelligent Sensors".

Deadline for manuscript submissions: 15 May 2024 | Viewed by 2717

Special Issue Editor


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Guest Editor
Electronic Instrumentation Laboratory, Delft University of Technology, 2628 CD Delft, The Netherlands
Interests: front-end electronics; ultrasound medical imaging application

Special Issue Information

Dear Colleagues,

Recent progresses in developing ultrasound sensors and electronics for medical imaging applications have been outstanding. Developing advanced ultrasound sensors has been an active research topic with ever-challenging and pioneering technical requirements (e.g., sensitivity improvements, matrix array design, bandwidth enhancements, and micromachined transducer technology). Concurrently, various electronic solutions, such as application-specific integrated circuits (ASICs) or field-programmable gate arrays (FPGAs), have been developed to deal with advanced imaging technologies and ultrafast imaging processing. The emergence of these revolutionary hardware designs enables medical ultrasound imaging based on conventional cart-based scanners to evolve to new form factors, e.g., hand-held point-of-care scanners, real-time 3-D probes, and imaging catheters. This Special Issue aims to publish original manuscripts and the latest research focusing on design of transducer array and interfacing electronics that enable next-generation ultrasound devices and innovative imaging techniques.

In this Special Issue, we are looking forward to receiving papers on a wide range of research topics, including, but not limited to, the following themes.

  • Ultrasound transducer modeling, materials, and structures
  • Matrix transducer array designs and fabrications
  • Design of ultrasound ASICs for specific applications
  • Co-integration of transducer array and electronics
  • Implementation of ultrasound systems, including pulse excitation, impedance matching, analog signal conditioning, digitization, beamforming, and digital signal processing

Dr. Taehoon Kim
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • acoustic signal processing
  • ultrasound transducer array
  • front-end electronics
  • application-specific integrated circuits (ASICs)
  • field-programmable gate array (FPGA)
  • beamforming
  • next-generation ultrasound probe
  • ultrasound imaging system
  • volumetric imaging

Published Papers (2 papers)

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Research

12 pages, 4158 KiB  
Article
A Novel Three-Point Localization Method for Bladder Volume Estimation
by Junru Yuan, Mingke Shen, Tao Zhang, Jun Ou-Yang, Xiaofei Yang and Benpeng Zhu
Sensors 2024, 24(6), 1932; https://doi.org/10.3390/s24061932 - 18 Mar 2024
Viewed by 503
Abstract
The measurement of bladder volume is crucial for the diagnosis and treatment of urinary system diseases. Ultrasound imaging, with its non-invasive, radiation-free, and repeatable scanning capabilities, has become the preferred method for measuring residual urine volume. Nevertheless, it still faces some challenges, including [...] Read more.
The measurement of bladder volume is crucial for the diagnosis and treatment of urinary system diseases. Ultrasound imaging, with its non-invasive, radiation-free, and repeatable scanning capabilities, has become the preferred method for measuring residual urine volume. Nevertheless, it still faces some challenges, including complex imaging methods leading to longer measurement times and lower spatial resolution. Here, we propose a novel three-point localization method that does not require ultrasound imaging to calculate bladder volume. A corresponding triple-element ultrasound probe has been designed based on this method, enabling the ultrasound probe to transmit and receive ultrasound waves in three directions. Furthermore, we utilize the Hilbert Transform algorithm to extract the envelope of the ultrasound signal to enhance the efficiency of bladder volume measurements. The experiment indicates that bladder volume estimation can be completed within 5 s, with a relative error rate of less than 15%. These results demonstrate that this novel three-point localization method offers an effective approach for bladder volume measurement in patients with urological conditions. Full article
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16 pages, 5926 KiB  
Article
An Inverse Class-E Power Amplifier for Ultrasound Transducer
by Hojong Choi
Sensors 2023, 23(7), 3466; https://doi.org/10.3390/s23073466 - 26 Mar 2023
Cited by 3 | Viewed by 1482
Abstract
An inverse Class-E power amplifier was designed for an ultrasound transducer. The proposed inverse Class-E power amplifier can be useful because of the low series inductance values used in the output matching network that helps to reduce signal distortions. Therefore, a newly designed [...] Read more.
An inverse Class-E power amplifier was designed for an ultrasound transducer. The proposed inverse Class-E power amplifier can be useful because of the low series inductance values used in the output matching network that helps to reduce signal distortions. Therefore, a newly designed Class-E power amplifier can obtain a proper echo signal quality. The measured output voltage, voltage gain, voltage gain difference, and power efficiency were 50.1 V, 22.871 dB, 0.932 dB, and 55.342%, respectively. This low voltage difference and relatively high efficiency could verify the capability of the ultrasound transducer. The pulse-echo response experiment using an ultrasound transducer was performed to verify the capability of the proposed inverse Class-E power amplifier. The obtained echo signal amplitude and pulse width were 6.01 mVp-p and 0.81 μs, respectively. The −6 dB bandwidth and center frequencies of the echo signal were 27.25 and 9.82 MHz, respectively. Consequently, the designed Class-E power amplifier did not significantly alter the performance of the center frequency of the ultrasound transducer; therefore, it could be employed particularly in certain ultrasound applications that require high linearity and reasonable power efficiency. Full article
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