Acoustical Imaging

Acoustical Microscopy — 1.- Considerations of Contrast in the Helium Acoustic Microscope.- Acoustic Microscopy at Temperatures Less Than 0.2°K.- Planar Acoustic Microscope Lens.- Acoustical Microscopy — 2.- Coverslip Induced Artifacts in High Resolution Scanning Laser Acoustic Microscope Images.- Ultrasonic Focussing in Absorptive Fluids.- Scanning Photoacoustic Microscopy and Detection of Subsurface Structure.- Applications of Acoustic Microscopy in the Semiconductor Industry.- Non-Destructive Evaluation — 1.- Application of Scanning Acoustic Microscope to the Study of Fracture and Wear.- Acoustic Microscopy for Materials Studies.- Material Characterization by Acoustic Microscope with Line-Focus Beam.- NDE of Solids with a Mechanically B-Scanned Acoustic Microscope.- Scanning Acoustic Microscopy Inside Ceramic Samples.- Non-Destructive Evaluation — 2.- Ultrasonic-Wave Generation by Surface and Bulk Heating in Multimaterial Structures.- Scanned Photothermal Imaging of Subsurface Structure.- Acoustical Imaging of Near Surface Properties at the Rayleigh Critical Angle.- An Experimental Investigation of the ‘Hosepipe’ Technique of Real-Time C-Scanning.- Signal Processing — 1.- A Stochastical Imaging Procedure.- Lateral Inverse Filtering of Ultrasonic B-Scan Images.- Texture Classification of B-Scan Ultrasound Images: an Assessment using Tissue Models.- Reduction of Speckle in Ultrasound B-Scans by Digital Processing.- Signal Processing — 2.- Optical Processing of Linear Array Ultrasonic Images.- Inverse Filtering to Minimize the Effect of Mechanical Aberration in Focusing Piezoelectric Transducers.- The Application of Maximum Entropy to the Processing of Ultrasonic Images of Nuclear Reactor Components Immersed in Liquid Sodium.- A Self-Focusing UltrasonicImage Reconstruction Technique.- New Possibilities in Data Measurement, Signal Processing and Information Extraction; Philosophy and Results.- Transducers — 1.- A Method for Improving Acoustic Switching Ratio in Opto-Acoustic Transducers.- The Design of Electric Excitations for the Formation of Desired Temporal Responses of Highly Efficient Transducers.- A Linear Monolithic Receiving Array of PVDF Tranducers for Transmission Cameras.- Physical Limiations of Optically-Scanned Acoustic Imaging Tranducers at Ultrasonic Frequencies Above 10MHz.- Transducers — 2.- Particle Velocity and Displacement Patterns of Disc Transducers with Amplitude Shading.- Recent Developments in Axicon Imaging.- Multi Element Arrays.- Enhanced Trapped Energy Mode Array Transducer Using Thickness Overtones.- A Theoretical Study of Transient Behaviour of Ultrasonic Transducers in Linear Arrays.- An Experimental Method for Characterizing Ultrasonic Transducers.- A Two-Dimensional Phased Array with an Extended Depth of Focus: Some Preliminary Results.- Scattering and Propagation.- Estimation of Echo Scattered from Strongly Scattering Medium.- Directivity Patterns in Inhomogeneous Acoustic Media.- Tissue Ultrasonic Attenuation Well Modelized by a Mellin-Convolution.- Three-Dimensional Imaging of Soft Tissue with Dispersive Attenuation.- Elastic Wave Imaging with the Aid of an Inversion Transformation.- Numerical Techniques for the Inverse Acoustical Scattering Problem in Layered Media.- Tissue Characterisation and Doppler — 1.- Pulse and Impulse Response in Human Tissues.- Two-Dimensional Diffraction Scanning of Both Fresh and Fixed Normal and Cancerous Human Hepatic Tissue.- An Approach to Tissue Characterization Based on Wave Theory Using a New Velocity Analysis Technique.- Short Time FourierAnalysis and Diffraction Effect in Biological Tissue Characterization.- Tissue Characterisation Using Acoustic Microscopy.- Tissue Characterisation and Doppler — 2.- Ultrasonic Doppler Vessel Imaging in the Diagnosis of Arterial Disease.- Real-Time Two-Dimensional Blood Flow Imaging Using a Doppler Ultrasound Array.- Measurement of Blood Flow Using Ultrasound.- Large Area Doppler Array for the Rapid Investigation of the Breast.- Reconstruction Tomography.- Ultrasound Computerized Tomography Using Transmission and Reflection Mode: Application to Medical Diagnosis.- Synthetic Aperture Tomographic Imaging for Ultrasonic Diagnostics.- A Clinical Prototype Ultrasonic Transmission Tomographic Scanner.- Ultrasonic Tomography for Differential Thermography.- Further Results on Diffraction Tomography Using Rytov's Approximation.- A Backward Projection Algorithm Which Corrects for Object Motion in a Scanning Acoustical Imaging System.- Imaging Systems — 1.- 3-D Active Incoherent Ultrasonic Imaging.- Acoustical Imaging Using the Phase of Echo Waveforms.- NDE Imaging with Multielement Arrays.- Imaging Systems — 2.- Acoustical Holographic Scanners.- Second Time Around Echo Immunity from Pseudo Stereoscopic Holographic Imaging.- UHB Imaging.- Expansion of Acoustic Hologram Apertures Using ARMA Modelling Techniques.- Array Systems for Underwater Viewing by Acoustical Holography.- Imaging Systems — 3.- Acoustic Determination of Sub-Bottom Density Profiles Using a Parametric Sound Source.- Abnormal Backscattering off Low Roughness Surface of Metallic Object Immersed in Water.- List of Participants.