Acoustical Imaging

A History of Acoustical Imaging.- Tomography and Image Reconstruction.- Diffraction Tomography with Multiple Scattering.- Arced Backprojection with an Efficient Computation for Ultrasound Reflection Mode Tomography.- Passive Imaging Through Media with Distributed Inhomogeneities Using an Extension of the Phase Closure Technique.- Computation Simplification for High-Speed Acoustical Image Reconstruction.- A Frequency Diversity Method of Reducing Speckle in Wideband Ultrasound Images.- Ultrasonic Phase Tomography for Medical Applications.- Tissue Characterization.- Improved Tissue Characterization Using Scattering Images.- Transient Acoustic Scattering in Dispersive Soft Tissue.- Estimation of Acoustic Attenuation in Diffuse Liver Disease: Can it Be Done With the Zero-Crossing Technique?.- Transducers and Arrays.- Calculation of Transient Radiation Fields from Axial Symmetric Sources.- Pulsed PVDF Transducer Fields — Comparison of Theory and Experiment.- A New Technique for Characterizing Ultrasonic Transducers in Inhomogeneous Media.- Development of an Electromagnetic Acoustic Transducer for Inspecting the Wall Thickness of Offshore Risers from the Inside.- Transducer Array for Ultrasound Holographic B-Scan Imaging.- Image and Signal Processing.- Accurate Reconstruction of Flaws in Materials Using a Synthetic Aperture Ultrasonic Imaging System.- Parametric Approach on Field Propagation.- Performance of Fast Inverse Scattering Solutions for the Exact Helmholtz Equation Using Multiple Frequencies and Limited Views.- An ECG-Gated Colour Doppler Imaging System for Determination of Coronary Bypass Graft Patency.- A Two-Dimensional PVDF Transducer Matrix as a Receiver in an Ultrasonic Transmission Camera.- A New Digital Scan Processor for Ultrasonic Imaging.- DirectImaging.- A Real-Time Imaging System for Non-Destructive Evaluation.- Implementation of a Real-Time Ultrasonic SAFT System for Inspection of Nuclear Reactor Components.- Flaw Identification in ALOK Imaging System.- A New Surface Acoustic Wave Imaging Technique.- Acoustical Imaging Techniques — Theoretical and Experimental Results.- A Flow Imaging and CW Spectral Analysis System.- Multidimensional Ultrasonic Heart Imaging.- Tomography.- Optimal Incident Angles in Scanning Tomographic Microscopy.- Ultrasonic Reflection Tomography with a Transmitter — Receiver System.- Speckle in Ultrasound Computerized Reflection Mode Tomography.- Analysis of Inverse Scattering Solutions from Single Frequency, Combined Transmission and Reflection Data for the Helmoholtz and Riccati Exact Wave Equations.- Attempt to Include Refraction in an Ultrasonic Tomography Algorithm.- Acoustical Microscopy.- Back-Projection Algorithms for a Computer-Controlled Scaning Laser Acoustic Microscope.- Directional Acoustic Microscope with Electrical Reference Signals.- Focal Plane Detection in Acoustical Imaging.- Progress Toward a Practical 100 MHz Scanning Laser Tomographic Acoustic Microscope.- Thermoacoustic Imaging Using a Laser Probe.- A High Performance Acoustic Microscope — Technical Aspects and Selected Applications.- Subsurface Imaging in Acoustic Microscopy.- Poster Session.- Relation Between Spatial Frequency Sampling Window and Lateral Resolution in Backward Propagation Acoustical Imaging.- Applications of Digital Image Enhancement Techniques to the Ultrasonic NDE of Composite Materials.- Some Problems and Experimental Results of Seismic Shallow Prospecting.- A Modified Sum Focussing Approach to Ultrasonic Speckle Reduction.- Dereverberation Techniques.- Polarity-Sensitive Detection ofPulsed Ultrasound Signals.- Ultrasonic Defects Visualization in a Metal Block.- Generalized Holography as an Improved Version of Conventional Acoustical Holography.- Joint Fourier Transform Cross-Correlation for Liver Echotexture Classification.- A Two-Element Annular Array of Short Fixed Focal Length for Dynamic Focussing.- Acoustic Imaging of Solid Objects in Air Using a Small Set of Transducers: III Experimental Demonstration.- Other Imaging Techniques.- A Broadband — Holography Imaging System for Nondestructive Evaluation.- Efficient Acoustical Holography and Phase Imaging with High Resolution at 3.6 MHz Using a Liquid Crystal Converter.- NDE in Multilayers: Theory, Computer Simulation and Experiments.- Underwater Acoustic Imaging.- Synthetic Aperture Sonar for Sub-Bottom Imaging.- Vertical Seismic Profiling Depth Migration of A Salt Dome Flank — A Summary.- A Sensor-Efficient Algorithm for Array Processing.- Acoustical Imaging and Point Processes.- High-Resolution Acoustical Image Reconstruction Algorithm for Finite-Size Objects: The Cascade Form.- Underwater Acoustical Holographic Imaging by a Square Array System.- Imaging the Nearfield of a Submerged Plate Using Acoustical Holography.- Participants.- Author index.