The International Acoustical Imaging Symposium has been held continuously since 1968 as a unique forum for advanced research, promoting the sharing of technology, developments, methods and theory among all areas of acoustics. The interdisciplinary nature of the Symposium and the wide international participation are two of its main strengths. Scientists from around the world present their papers in an informal environment conducive to lively discussion and cross-fertilization.The fact that a loyal community of scientists has supported this Series since 1968 is evidence of its impact on the field. The Symposium Series continues to thrive in a busy calendar of scientific meetings without the infrastructure of a professional society. It does so because those who attend and those who rely on the Proceedings as a well-known reference work acknowledge its value.This Volume 28 of the Proceedings likewise contains an excellent collection of papers presented in six major categories, offering both a broad perspective on the state-of-the-art in the field as well as an in-depth look at its leading edge research.

"The International Acoustical Imaging Symposium has been held continuously since 1968 as a unique forum for advanced research, promoting the sharing of technology, developments, methods and theory among all areas of acoustics. The interdisciplinary nature of the Symposium and the wide international participation are two of its main strengths. Scientists from around the world present their papers in an informal environment conducive to lively discussion and cross-fertilization.

Acoustic Microscopy.- Air-Coupled Imaging Method Applied to the Study and Conservation of Paintings.- Study of Biomedical Specimens Using Scanning Acoustic Microscopy.- Image Processing of Acoustic Microscopy Data to Estimate Textural Scales and Anistropy in Shales.- Near-Field Acoustical Imaging using Lateral Bending Mode of Atomic Force Microscope Cantilevers.- Measurements of Parameters of Leaky Waves Using Ultrasonic Material Characterization System with Electronic Scanning.- Application of an Acoustic Microscope for the Investigation of Embryonic Development in Quails Coturnix Coturnix.- Ultrasonic Characterization of the Biological Objects of Spherical or Cylindrical Shape Using an Acoustic Microscope.- Osteoblast Adhesion of Breast Cancer Cells with Scanning Acoustic Microscopy.- Measuring Cell Volume Regulation with Time Resolved Acoustic Microscopy.- Fundamental Potential for Acoustic Microscopy Evaluation of Dental Tissues.- Components and Systems.- Performance Improvement of Algorithms Based on the Synthetic Aperture Focusing Technique.- Ultra-Broadband Ultrasonic Imaging Using Bi-Layer Structure Probe.- Development of a 40-MHz Annular Array.- Measuring Phase of Vibration of Spheres in a Viscoelastic Medium Using Vibrometry.- Acoustic Rhinometry (AR): An Alternative Method to Image Nasal Airway Geometry.- A New High Frequency Ultrasound Skin Imaging System: Imaging Properties and Clinical in Vivo Results.- Computed Tomography.- Non-Invasive Breast Tissue Characterization Using Ultrasound Speed and Attenuation.- Data Symmetries and their Use in Acoustic Diffraction Tomography.- Computerized Ultrasound Risk Evaluation (CURE): First Clinical Results.- Full-Wave, Non-Linear, Inverse Scattering.- High-Resolution 3-D Imaging and Tissue Differentiation with Transmission Tomography.- Using Diffraction Tomography to Estimate Marine Animal Size.- Breast Ductal Computer Phantom.- Compound Quantitative Ultrasonic Tomography of Long Bones Using Wavelets Analysis.- Data Redundancies in Reflectivity Tomography Using Offset Sources and Receivers.- Biological and Medical Applications.- Experimental Validation of the Spectral Fit Algorithm Using Tissue Mimicking Phantoms.- Acoustical Imaging of Individual Microbubbles.- Optimization of a Breast Mass Classifier for Computer-Aided Ultrasound Analysis.- Ex Vivo Breast Tissue Imaging and Characterization Using Acoustic Microscopy.- An Ultrasound Based System for Navigation and Therapy Control of Thermal Tumour Therapies.- Classification of Thermally Ablated Tissue Using Diagnostic Ultrasound.- High Frequency Quantitative Ultrasound Imaging of Solid Tumors in Mice.- Study and Characterization of Subharmonic Emissions by Using Shaped Ultrasonic Driving Pulse.- Volumetric Imaging Using Acoustical Holography.- Recent Advances in Ultrasonic Tissue-Type Imaging of the Prostate.- Diagnostic Performance of a Computer-Aided Image Analysis System For Breast Ultrasound.- Clinical Experimentation of FEMMINA* and RULES+ for Prostate and Breast Tumor Detection.- Non-Destructive Evaluation.- Measurements of Parameters of Leaky Waves Using Ultrasonic Material Characterization System With Electronic Scanning.- Acoustic Imaging of Microstructure and Evaluation of the Adhesive's Physical, Mechanical and Chemical Properties Changes at Different Cure States.- Application of Images When Evaluating Ultrasonic Examination: Results in Industrial Practice.- Innovative Power Amplifier and Transducer Technologies for High Frequency, Broadband Sonar Arrays.- Direct and Post-Compressed Sound Fields for Different CodedExcitations.- Elastic Properties of Clay Minerals Determined by Atomic Force Acoustic Microscopy Technique.- Physics and Mathematics.- Three-Dimensional Acoustic Tissue Model: A Computational Tissue Phantom for Image Analyses.- Quantum Acoustical Imaging.- A Study of Pulse-Echo Image Formation Using Non-Quadratic Regularization with Speckle-Based Images.- Analytical Solutions of the KDV-KZK Equation.- Synthetic Aperture Focusing of Echographic Images by Means of Pulse Compression.- Acoustical Imaging with Negative Refraction.