2011 IEEE International Ultrasonics Symposium最新文献

High temperature ultrasonic transducers for in-service inspection of liquid metal fast reactors 用于液态金属快堆在役检测的高温超声换能器

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-31 DOI: 10.1109/ULTSYM.2011.0479

J. Griffin, G. J. Posakony, Robert V. Harris, David L. Baldwin, Anthony M. Jones, Leonard J. Bond

引用次数: 13

Quantitative analysis of the effect of energetic particle bombardment during deposition on (1120) texture formation in ZnO films 沉积过程中高能粒子轰击对ZnO薄膜(1120)织构形成影响的定量分析

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0575

S. Takayanagi, T. Yanagitani, M. Matsukawa, Y. Watanabe

引用次数: 4

Active control of subharmonic response of ultrasound contrast agent microbubbles 超声造影剂微泡亚谐波响应的主动控制

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0043

T. Faez, G. Renaud, M. Defontaine, S. Callé, N. de Jong

{"title":"Active control of subharmonic response of ultrasound contrast agent microbubbles","authors":"T. Faez, G. Renaud, M. Defontaine, S. Callé, N. de Jong","doi":"10.1109/ULTSYM.2011.0043","DOIUrl":"https://doi.org/10.1109/ULTSYM.2011.0043","url":null,"abstract":"The influence of a dynamic variation in the ambient pressure on the subharmonic response of phospholipid-coated microbubbles was investigated. The ambient pressure in water was modulated by a 2.5 kHz acoustic wave with peak amplitude of 15 kPa. We investigated the fundamental and subharmonic emission at two driving frequencies: 5 and 10 MHz. We measured that the variation in the ambient pressure of 15 kPa can modulate the subharmonic amplitude up to 10 dB. We also noticed that the relative subharmonic amplitude modulation as a function of the LF acoustic pressure was symmetrical for the 5 MHz driving frequency but asymmetric for 10 MHz. However the fundamental amplitude was symmetrically modulated during bubble compression and expansion. Numerical simulations showed that these behaviors can be obtained and are depending on the bubbles' diameter. The highest subharmonic amplitude was measured when microbubbles were insonified at 10 MHz. This fact together with the asymmetry observed in the subharmonic modulation suggests that smaller bubbles with buckling shell are excited at 10 MHz compared to experiments at 5 MHz. These results present new potentials for in vitro characterization of contrast agent microbubbles and possibly a new imaging modality.","PeriodicalId":257745,"journal":{"name":"2011 IEEE International Ultrasonics Symposium","volume":"30 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123917695","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

Polarization-inverted multilayered pure shear mode AlN film resonator 极化倒置多层纯剪切模式AlN薄膜谐振器

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0075

M. Suzuki, T. Yanagitani

引用次数: 3

Brillouin scattering from induced phonons excited by the ZnO piezoelectric thin film with a coaxial resonator 同轴谐振器ZnO压电薄膜激发声子的布里渊散射

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0270

T. Sugimoto, H. Sano, T. Yanagitani, S. Takayanagi, M. Matsukawa

引用次数: 2

C-axis parallel oriented ZnO film SH-SAW sensor for electrical conductivity measurement in liquid 用于测量液体电导率的c轴平行取向ZnO薄膜SH-SAW传感器

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0198

Y. Nakahigashi, T. Yanagitani, M. Matsukawa, Y. Watanabe

引用次数: 1

Sonoporation of endothelial cells in vivo 内皮细胞在体内的超声穿孔

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0363

I. Skachkov, K. Kooiman, Y. Luan, T. van der Steen, N. de Jong

引用次数: 3

Study on rotation speed control of coiled stator ultrasonic motor using pulse width modulation 脉宽调制法控制超声电机转速的研究

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0418

T. Omura, M. Tanabe, K. Okubo, N. Tagawa

引用次数: 2

A novel imaging method of coded THI using multi chirp signals 一种利用多啁啾信号编码THI的新型成像方法

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0093

M. Tanabe, T. Yamamuray, K. Okuboy, N. Tagaway

引用次数: 3

Motion compensation method for quantification of neovascularization in carotid atherosclerotic plaques with contrast enhanced ultrasound (CEUS) 超声造影测量颈动脉粥样硬化斑块新生血管的运动补偿方法

2011 IEEE International Ultrasonics Symposium Pub Date : 2011-12-01 DOI: 10.1109/ULTSYM.2011.0284

Z. Akkus, J. Bosch, G. Renaud, A. Hoogi, G. T. ten Kate, S. V. D. Van Den Oord, A. Schinkel, N. de Jong, A. V. D. van der Steen

{"title":"Motion compensation method for quantification of neovascularization in carotid atherosclerotic plaques with contrast enhanced ultrasound (CEUS)","authors":"Z. Akkus, J. Bosch, G. Renaud, A. Hoogi, G. T. ten Kate, S. V. D. Van Den Oord, A. Schinkel, N. de Jong, A. V. D. van der Steen","doi":"10.1109/ULTSYM.2011.0284","DOIUrl":"https://doi.org/10.1109/ULTSYM.2011.0284","url":null,"abstract":"Several studies have linked intraplaque neovascularization (IPN) with progressive atherosclerotic disease and plaque instability. An accurate quantification of IPN may allow early detection of vulnerable plaques. In this study, a dedicated motion compensation method was developed for quantification of IPN in small plaques (<;30% diameter stenosis). Motion compensation is a prerequisite to analyze identical regions of interest (ROI) for accurate quantification of IPN. Side-by-side CEUS and B-mode ultrasound images of carotid arteries were acquired by a Philips iU22 system with a L9-3 linear array probe. The motion pattern for the plaque region was obtained from the B-mode images with a tuned speckle tracking (ST) method with subpixel precision and applied to contrast images. In-vivo validation was done by comparing ST to manual tracking by two experts for multibeat image sequences (MIS) of 11 plaques. In the in-vivo validation, error was 51.4 ± 91 μm for X (longitudinal) and 18.7 ± 39.8 μm for Y (radial). The ST success rate was visually assessed on 67 atherosclerotic wall plaque MIS. The tracking was considered failed if the ST deviated >; 2 pixels from true motion in any frame. Tracking was scored as fully successful in 52 MIS (78%). The proposed motion tracking is sufficiently accurate and successful for in vivo application.","PeriodicalId":257745,"journal":{"name":"2011 IEEE International Ultrasonics Symposium","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128255877","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: 4