By Topic

2007 IEEE Ultrasonics Symposium Proceedings

28-31 Oct. 2007

Filter Results

Displaying Results 1 - 25 of 656
  • [Title page]

    Publication Year: 2007, Page(s): i
    Request permission for commercial reuse | PDF file iconPDF (56 KB)
    Freely Available from IEEE
  • Copyright page

    Publication Year: 2007, Page(s): ii
    Request permission for commercial reuse | PDF file iconPDF (18 KB)
    Freely Available from IEEE
  • Editors Note

    Publication Year: 2007, Page(s): iii
    Request permission for commercial reuse | PDF file iconPDF (16 KB)
    Freely Available from IEEE
  • Welcome Organizing Committee

    Publication Year: 2007, Page(s):iv - v
    Request permission for commercial reuse | PDF file iconPDF (152 KB)
    Freely Available from IEEE
  • Welcome Technical Chairs

    Publication Year: 2007, Page(s): vi
    Request permission for commercial reuse | PDF file iconPDF (17 KB)
    Freely Available from IEEE
  • Tech Program Committee

    Publication Year: 2007, Page(s):vii - viii
    Request permission for commercial reuse | PDF file iconPDF (26 KB)
    Freely Available from IEEE
  • Short Courses

    Publication Year: 2007, Page(s):ix - xiii
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (60 KB)

    Provides an abstract for each of the course presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Presidents speakers

    Publication Year: 2007, Page(s): xiv
    Request permission for commercial reuse | PDF file iconPDF (28 KB)
    Freely Available from IEEE
  • Special Sessions

    Publication Year: 2007, Page(s):xv - xvii
    Request permission for commercial reuse | PDF file iconPDF (34 KB)
    Freely Available from IEEE
  • Invited Speakers

    Publication Year: 2007, Page(s): xviii
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (20 KB)

    Provides an abstract for each of the invited presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Exhibitors

    Publication Year: 2007, Page(s): xix
    Request permission for commercial reuse | PDF file iconPDF (17 KB)
    Freely Available from IEEE
  • Student Finalists

    Publication Year: 2007, Page(s):xx - xxi
    Request permission for commercial reuse | PDF file iconPDF (32 KB)
    Freely Available from IEEE
  • Condensed Program

    Publication Year: 2007, Page(s):xxii - xxiv
    Request permission for commercial reuse | PDF file iconPDF (75 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2007, Page(s):xxv - lxxvi
    Request permission for commercial reuse | PDF file iconPDF (203 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 2007, Page(s):2610 - 2621
    Request permission for commercial reuse | PDF file iconPDF (134 KB)
    Freely Available from IEEE
  • 2A-2 Investigations into the Potential Contribution of a Thermal Mechanism for Pulsed High Intensity Focused Ultrasound Mediated Delivery

    Publication Year: 2007, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (868 KB) | HTML iconHTML

    The mechanism behind pulsed high intensity focused ultrasound (pHIFU) effects leading to increased drug delivery is currently poorly understood. In this work, the thermal dose and peak temperatures associated with a typical pHIFU treatment were measured in mouse muscle. A non-ultrasonic hyperthermia (HT) treatment was then applied, designed to mimic the thermal component of the pHIFU treatment. Th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2A-3 Enhanced and Site-Specific HIFU Treatment with Phase-Change Nano Droplet

    Publication Year: 2007, Page(s):5 - 8
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (161 KB) | HTML iconHTML

    A preliminary study for advanced HIFU therapy system was performed which enabled echographic marking and enhancing of the ultrasonic energy absorption efficiency at site of interest. As a main component of this system, we are developing phase change nano-droplet, a liquid precursor of a microbubble that changes into a bubble upon applying ultrasonic pulses. In this study, we investigated the effec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2B-1 Robert Adler's Touchscreen Inventions

    Publication Year: 2007, Page(s):9 - 20
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2114 KB) | HTML iconHTML

    We honor the memory of our late IEEE colleague Robert Adler. Adler's accomplishments include an impressive body of scientific work and major inventions. The SAW touchscreen is his last innovation having a major impact on our daily lives. The authors, who worked with Robert Adler on touchscreen research, share their perspectives on his SAW touchscreen inventions. In addition to highlighting Robert ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2C-1 A Post-Beamforming 2D Pseudoinverse Filter for Coarsely Sampled Ultrasound Arrays

    Publication Year: 2007, Page(s):21 - 24
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB) | HTML iconHTML

    Beamforming artifacts due to coarse discretization of imaging apertures represent a significant barrier toward the use of array probes in high frequency ultrasound (HFUS) applications. In this paper, we present a new design approach for two-dimensional (2D) regularized Pseudoinverse filters suitable for restoring imaging contrast in systems employing coarsely sampled arrays. The approach is based ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2C-3 An Integrated Circuit with Transmit Beamforming and Parallel Receive Channels for 3D Ultrasound Imaging: Testing and Characterization

    Publication Year: 2007, Page(s):25 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (786 KB) | HTML iconHTML

    The cost and complexity of medical ultrasound imaging systems can be reduced by integrating the transducer array with an integrated circuit (IC). By incorporating some of the system's front-end electronics into an IC, bulky cables and costly system electronics can be eliminated. Here we present an IC for 3D intracavital imaging that requires few electrical connections but uses a large fraction of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2C-4 A 64-Channel Beamformer for 50 MHz Linear Arrays

    Publication Year: 2007, Page(s):29 - 32
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB) | HTML iconHTML

    This paper describes the design and implementation of a 64-channel beamformer for a 50 MHz linear array for use in medical imaging. The results for a series of theoretical models comparing various beamforming algorithms are given. The final algorithm is a compromise solution, applying a simple linear interpolation algorithm to a data set acquired using 4x interleaved sampling. This allows for 12 b... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2C-5 Simplification of High Frame Rate Imaging System with Coordinate Rotation

    Publication Year: 2007, Page(s):33 - 36
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (765 KB) | HTML iconHTML

    A method to greatly simplify the high-frame-rate (HFR) imaging system using a rotation of coordinates in image reconstruction was developed. A theory of Fourier image reconstruction was also developed and both in vitro (on an ATS539 tissue-mimicking phantom) and in vivo (on a human heart) experiments were performed to verify the theory. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2C-6 Optimal Contrast Resolution Beamforming

    Publication Year: 2007, Page(s):37 - 41
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (654 KB) | HTML iconHTML

    The delay-and-sum (DAS) beamformer, utilized in current state of the art ultrasound imaging systems, applies time delays on each receive channel to focus the returning echoes and weights the focused RF data on each receive channel prior to beamsummation. Apodization functions like the Hamming and Nuttall windows reduce the sidelobe levels the DAS beamformer's point spread function (PSF). As a resu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2D-1 Ultrasonic Characterization of the Curing of Powder Coating Films Based on Their tan(delta)

    Publication Year: 2007, Page(s):42 - 45
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    The aim of this study was to establish a relationship between the mechanical properties of a powder coating, extracted using ultrasonic analyses, and the extent of its curing. This study was necessitated by the fact that most current methods either focus on in-process temperature monitoring or on laboratory analysis of powder samples and not on post-curing characterization of industrial samples. W... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2D-2 Ultrasonic Methods in Determining Elastic Material Properties of Fibres in Suspension

    Publication Year: 2007, Page(s):46 - 49
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (134 KB) | HTML iconHTML

    The presented study concerns the application of the pulse-echo ultrasound measurement technique in determining the elastic properties of fibres suspended in water. The two kinds of fibre materials are investigated, nylon 6/6 fibres and softwood pulp fibres. The fibre mass fraction was 0.5 % for nylon and ranges from 0 % up to 1 % for softwood pulp. The ultrasonic measurements are performed in the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.