Ultrasonic Scattering Theory II: Scattering from Composites

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Abstract
This is the second of two papers which present the fundamental concepts and terminology of acoustical scattering theory in a manner suitable for use by those involved in ultrasonic tissue characterization. The first paper [1] dealt with scattering by single objects. The present paper discusses scattering by collections of objects, including statistical aspects of scattering and the theory of the index of refraction for ultrasonic waves.