IEEE Ultrasonics Ferroelectrics and Freq Control
- Table of Contentson March 17, 2025 at 1:19 pm
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- IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control Publication Informationon March 17, 2025 at 1:19 pm
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- Front Coveron March 17, 2025 at 1:19 pm
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- Time-Sharing Acoustic Tweezers for Parallel Manipulation of Multiple Particleson February 10, 2025 at 1:17 pm
Holographic acoustic tweezers have various biomedical applications due to their ability to flexibly and rapidly synthesize acoustic fields for manipulating single or multiple particles. Existing multiparticle manipulation techniques are usually realized by precisely designing the incident wave’s phase distribution to synthesize a complex and steady-state acoustic field containing multiple […]
- Remote Super-Resolution Mapping of Wave Fieldson February 4, 2025 at 1:18 pm
Mapping wave field in space has many applications such as optimizing design of radio antennas, improving and developing ultrasound transducers, and planning and monitoring the treatment of tumors using high-intensity focused ultrasound (HIFU). Currently, there are methods that can map wave fields remotely or locally. However, there are limitations to these methods. For example, when mapping the […]
- Delivery of Cavitation Therapy With a Modified Clinical Scanner: In Vitro Evaluationon January 29, 2025 at 1:18 pm
In this study, we design and implement pulses [1.67 MHz, 20–1000 cycles, 0.8–2.5 MPa, and 5–100 ms pulse repetition time (PRT)] suitable for microbubble cavitation treatments with a phased array of a clinical ultrasound scanner. A range of acoustic parameters was evaluated in a tissue-mimicking phantom with suspended Sonazoid microbubbles. Hydrophone measurements were used to optimize the […]
- Frequency-Domain Decoding of Cascaded Dual- Polarity Waves for Ultrafast Ultrasound Imagingon January 28, 2025 at 1:18 pm
Ultrafast plane-wave (PW) ultrasound imaging is a versatile tool that has become increasingly relevant for blood flow imaging using speckle tracking but suffers from a low signal-to-noise ratio (SNR). Cascaded dual-polarity wave (CDW) imaging can improve the SNR by transmitting pulse trains, which are subsequently decoded to recover the imaging resolution. However, the current decoding method (in […]
- Spatially Weighted Fidelity and Regularization Terms for Attenuation Imagingon January 27, 2025 at 1:18 pm
Quantitative ultrasound (QUS) holds promise in enhancing diagnostic accuracy. For attenuation imaging, the regularized spectral log difference (RSLD) can generate accurate local attenuation maps. However, the performance of the method degrades when significant changes in backscatter amplitude occur. Variations in the technique were introduced involving a weighted approach to backscatter […]
- Quantification of Blood Flow in the Carotid Bifurcation of Healthy Subjectson January 22, 2025 at 1:17 pm
Locally disturbed blood flow patterns are known to create an atherogenic environment, particularly in the presence of other cardiovascular risk factors. Given the geometry of a healthy carotid artery, complex flow patterns are expected to be present. This study aims to characterize (complex) blood flow patterns and estimate flow-derived parameters in the carotid bifurcation of healthy subjects. […]
- Temperature Dependence of the Sensitivity of Hydrophones for Biomedical Ultrasound Exposimetryon January 9, 2025 at 1:20 pm
Though it has been recognized that the sensitivity of hydrophones depends on the temperature of the water they are used in, the amount of specific data that is available is very limited. This is possible because the measurements are technically challenging, laborious, and time-consuming. A broadband primary hydrophone calibration setup was extended to implement stable calibration conditions at […]
- Variable Curvature Flexible Transducer for Abdominal Expandable Imagingon January 9, 2025 at 1:20 pm
Expanding the imaging field of view (FOV) of medical ultrasound transducers will more effectively detect pathological behaviors of tissues or organs. Conventional rigid transducers can be realized by increasing the number of array elements or the curvature; however, the imaging aperture is fixed by the original size and shape during the manufacturing process. This article presented a 128-element, […]
- Double Metal Dots Configuration for Suppression of Spurious Responses in Temperature Compensated Surface Acoustic Wave Resonators on SiO₂/LiNbO₃ Structureon January 8, 2025 at 1:21 pm
This article proposes a double metal dots interdigital transducer (IDT) configuration for suppression of spurious responses in temperature-compensated surface acoustic wave (SAW) resonators employing the SiO2/LiNbO3 structure. The proposed IDT configuration includes primary metal dots at the edges of the IDT aperture region, and in addition, secondary metal dots placed near the busbars with the […]