2022 IEEE International Ultrasonics Symposium (IUS)最新文献_第10页

Difference-Frequency-Based Ultrasonic Contrast Imaging of Material Elasticities 基于差频的材料弹性超声对比成像

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9957442

Dong Hun Kim, Young Seok Kwon, Dong-Hyun Kang, Shinyong Shim, J. H. Park, Byung Chul Lee

引用次数: 0

Synthesis Approach to Ladder-DMS Mixed Structures 阶梯- dms混合结构的合成方法

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9957195

L. Acosta, E. Guerrero, C. Caballero, J. Verdú, P. de Paco

引用次数: 0

Position and Orientation Control of Complex-Shaped Samples in Acoustic Levitation 声学悬浮中复杂形状样品的位置和方向控制

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9957565

Felix Sundblad, Denys Iablonskyi, Axi Holmström, A. Salmi, E. Hæggström

引用次数: 0

Speed of Sound Estimation at Multiple Angles from Common Midpoint Gathers of Non-Beamformed Data 非波束形成数据共中点集多角度声速估计

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9958779

Thurston Brevett, S. Sanabria, Rehman Ali, J. Dahl

引用次数: 9

Performance Comparison Between Single Layer and Several Configurations of Bilayer P(VDF-TrFE) Transducers in Pulse-Echo Measurements 脉冲回波测量中单层与几种双层P(VDF-TrFE)换能器的性能比较

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9958503

Sean Toffessi Siewe, S. Callé, L. Tran-Huu-Hue, Aline Banquart, J. Grégoire, S. Chevalliot, A. Capri, F. Levassort

{"title":"Performance Comparison Between Single Layer and Several Configurations of Bilayer P(VDF-TrFE) Transducers in Pulse-Echo Measurements","authors":"Sean Toffessi Siewe, S. Callé, L. Tran-Huu-Hue, Aline Banquart, J. Grégoire, S. Chevalliot, A. Capri, F. Levassort","doi":"10.1109/IUS54386.2022.9958503","DOIUrl":"https://doi.org/10.1109/IUS54386.2022.9958503","url":null,"abstract":"Piezoelectric copolymers such as P(VDF-TrFE) have been used over the years for the fabrication of high-frequency transducers, and particularly for medical imaging. With the aim of optimizing the sensitivity/bandwidth trade-off of this type of transducer, several manufactured bilayer P(VDF-TrFE) transducer configurations were obtained and the corresponding electroacoustic properties were compared with those of a reference single-layer transducer. In a first step, based on a previous study, performances of bilayer P(VDF-TrFE) transducers with both layers acting in emission and reception were compared with performances of a single-layer transducer. Electrical connections (parallel) and polarization direction (opposite) between piezoelectric layers were chosen. For this study, the piezoelectric layers consistently had the same thickness leading to different transducer center frequencies (a ration of 2). The bilayer configuration showed an increased sensitivity (+ 5.2 dB). In a second step, different configurations were studied, in which both piezoelectric layers acted in emission and both or only one of the layers acted in reception. Performances were compared with a reference single-layer transducer at the same frequency (10 MHz). The results showed that regardless of the bilayer configuration of our fabricated transducers, the single-layer structure had to be preferred in terms of sensitivity (+ 5 dB) at the expense of the relative bandwidth (−60 %) for imaging applications.","PeriodicalId":272387,"journal":{"name":"2022 IEEE International Ultrasonics Symposium (IUS)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125372088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbubble detection with adaptive beamforming for Ultrasound Localization Microscopy 基于自适应波束形成的超声定位显微镜微泡检测

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9958516

Alexandre Corazza, P. Muleki-Seya, Abderrahmane Aissani, O. Couture, A. Basarab, B. Nicolas

引用次数: 3

Enabling Spatial Multiplexing in Guided Waves-based Communication: the case of Quadrature Amplitude Modulation realized via Discrete Frequency Steerable Acoustic Transducers 在导波通信中实现空间复用:通过离散频率可操纵声换能器实现正交调幅的情况

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9958829

M. Mohammadgholiha, F. Zonzini, L. De Marchi

{"title":"Enabling Spatial Multiplexing in Guided Waves-based Communication: the case of Quadrature Amplitude Modulation realized via Discrete Frequency Steerable Acoustic Transducers","authors":"M. Mohammadgholiha, F. Zonzini, L. De Marchi","doi":"10.1109/IUS54386.2022.9958829","DOIUrl":"https://doi.org/10.1109/IUS54386.2022.9958829","url":null,"abstract":"Guided Waves (GWs) communication using conventional transducers, e.g., PZT, encounters quite a few problems, such as complex hardware systems and waves multipath interference. To overcome such drawbacks, Frequency Steerable Acoustic Transducers (FSATs) which benefit from inherent directional capabilities can be fruitfully adopted to implement a spatial multiplexing strategy. The FSATs work on the frequency-dependent spatial filtering effect to generate/receive waves, resulting in a direct relationship between the direction of propagation and the frequency content of the transmitted/received signals. Thanks to this unique frequency-steering capability, FSATs are best suited to implement frequency-driven modulation protocols, such as the ones typically exploited for GWs-based data communication. Among these, the Quadrature Amplitude Modulation (QAM) scheme is advantageous in terms of noise immunity. Thus, the objective of this work is to combine QAM with the built-in spatial multiplexing capabilities of FSATs to realize, in hardware, frequency directivity, like the solutions that are currently being investigated in 5G communications.","PeriodicalId":272387,"journal":{"name":"2022 IEEE International Ultrasonics Symposium (IUS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126754689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Automated Characterization of Matrix Transducer Arrays using the Verasonics Imaging System 使用Verasonics成像系统自动表征矩阵换能器阵列

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9957544

Djalma Simões dos Santos, F. Fool, Taehoon Kim, Emile Noothout, Nuriel Rozsa, H. Vos, J. Bosch, M. Pertijs, M. Verweij, Nico De Jona

{"title":"Automated Characterization of Matrix Transducer Arrays using the Verasonics Imaging System","authors":"Djalma Simões dos Santos, F. Fool, Taehoon Kim, Emile Noothout, Nuriel Rozsa, H. Vos, J. Bosch, M. Pertijs, M. Verweij, Nico De Jona","doi":"10.1109/IUS54386.2022.9957544","DOIUrl":"https://doi.org/10.1109/IUS54386.2022.9957544","url":null,"abstract":"Over the past decades, ultrasound imaging has made considerable progress based on the advancement of imaging systems as well as transducer technology. With the need for advanced transducer arrays with complex designs and technical requirements, there is also a need for suitable tools to characterize such transducers. However, despite the importance of acoustic characterization to assess the performance of novel transducer arrays, the characterization process of highly complex transducers might involve various manual steps, which are laborious, time-consuming, and subject to errors. These factors can hinder the full characterization of a prototype transducer, leading to an under-representation or inadequate evaluation. To come to an extensive, high-quality evaluation of a prototype transducer, the acoustic characterization of each transducer element is indispensable in both transmit and receive operations. In this paper, we propose a pipeline to automatically perform the acoustic characterization of a matrix transducer using a research imaging system. The performance of the pipeline is tested on a prototype matrix transducer consisting of 960 elements. The results show that the proposed pipeline is capable of performing the complete acoustic characterization of a high-element count transducer in a fast and convenient way.","PeriodicalId":272387,"journal":{"name":"2022 IEEE International Ultrasonics Symposium (IUS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126251517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Noninvasive Transcranial Ultrasound System 无创经颅超声系统

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9957460

R. Haupt, A. Fenn, D. Brigada, R. Laher, A. Samir

{"title":"Noninvasive Transcranial Ultrasound System","authors":"R. Haupt, A. Fenn, D. Brigada, R. Laher, A. Samir","doi":"10.1109/IUS54386.2022.9957460","DOIUrl":"https://doi.org/10.1109/IUS54386.2022.9957460","url":null,"abstract":"Conventional ultrasound (US) is essentially ineffective transmitting acoustic frequencies necessary for high resolution brain imaging through the adult skull due the large acoustic impedance that exists at the skull-brain interface. Here, we present a proof-of-concept system that uses pulsed microwave (RF) energy that transmits through the skull bone and generates US waves via thermoelastic expansion in brain tissue. The RF emitter is a multi-element phased array placed outside the skull that can steer and focus US waves within the brain interior. We have demonstrated that a hand-scale RF array can noninvasively generate US waves ranging in frequency from 20 kHz - 1 MHz within a skull/brain phantom. In this demonstration, US waves are measured with a contact transducer via a port through the phantom skull. However, for a total noninvasive system, we propose the use of coherent whose optical wavelength has the potential to penetrate bone. The light carrier would be modulated by the US vibration within brain tissue which then transmits back to the device positioned outside the skull, thus, acting as a noninvasive US receiver. This RFUS system is being developed with the goal of producing a portable point-of-care intracranial hemorrhage (ICH) detection system. We are also exploring the potential of RFUS to perform quantitative elastography characterizing the stages of hematoma progression and as a therapy activating neuromodulation to modify brain function.","PeriodicalId":272387,"journal":{"name":"2022 IEEE International Ultrasonics Symposium (IUS)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123090349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Programmable Oscillator Implementation Using 2.5 GHz Mirror-encapsulated BAW Resonator to Achieve $pm 20$ PPM Overall Stability 使用2.5 GHz镜像封装的BAW谐振器实现可编程振荡器，实现$pm 20$ PPM的整体稳定性

2022 IEEE International Ultrasonics Symposium (IUS) Pub Date : 2022-10-10 DOI: 10.1109/IUS54386.2022.9958706

Ernest Ting-Ta Yen, Keegan Martin, S. Mukherjee, Jeronimo Segovia-Femandez, Kaichien Tsai, Bichoy Bahr, Kashvap Mohan, Pceyoosh Miraikar, Harish Ramesh, Mahesh Chandrashekaraiah, Yao Yu, Y. Darwhekar, Jagdish Chand, Yf Chek, R. Jackson, Xiaolin Lu, Y. Ramadass, Xiaofan Qiu

{"title":"Programmable Oscillator Implementation Using 2.5 GHz Mirror-encapsulated BAW Resonator to Achieve $pm 20$ PPM Overall Stability","authors":"Ernest Ting-Ta Yen, Keegan Martin, S. Mukherjee, Jeronimo Segovia-Femandez, Kaichien Tsai, Bichoy Bahr, Kashvap Mohan, Pceyoosh Miraikar, Harish Ramesh, Mahesh Chandrashekaraiah, Yao Yu, Y. Darwhekar, Jagdish Chand, Yf Chek, R. Jackson, Xiaolin Lu, Y. Ramadass, Xiaofan Qiu","doi":"10.1109/IUS54386.2022.9958706","DOIUrl":"https://doi.org/10.1109/IUS54386.2022.9958706","url":null,"abstract":"This work presents a programmable oscillator using a 2.5 GHz mirror-encapsulated BAW resonator as the clock source. Unlike low-frequency crystal- or MEMS-based oscillators which require fractional PLLs (phase-locked loops) to generate higher output frequencies, proposed DBAR (dual-Bragg acoustic resonator) oscillators utilize an FOD (fractional output divider) to enable programmability and active compensation. The DBAR operation requires no cavity on either side of the resonator yet still maintain the immunity to humidity and mass loading from assembly and contamination, enabling cost-effective system integration. The CMOS die contains a cross-coupled differential oscillator core, FOD, buffer, as well as the required compensation blocks. Both dies are stacked and integrated in a $boldsymbol{3.2} mathbf{mm}times boldsymbol{2.5} mathbf{mm}$ QFN package, achieving $boldsymbol{pm 20}$ ppm overall stability (including compensation error, aging, solder shift, etc.).","PeriodicalId":272387,"journal":{"name":"2022 IEEE International Ultrasonics Symposium (IUS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122205450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0