ULTRASONIC IMAGING TECHNIQUES AND MAMMOGRAPH EQUIPMENT

摘要

An improved ultrasonic imaging system specially adapted for examination of a female breast utilizing direct imaging (two-dimensional) or holographic imaging (three-dimensional) techniques. Improvements in both types of ultrasonic imaging are described which utilize an improved fluid-filled lens for imaging an ultrasonic field passing through the breast or other object under investigation onto an area detector from which object information may be read out by light. Use of an ultrasonic lens in the reference beam of a holographic imaging system is also disclosed. A technique for holographic imaging wherein viewing optics are focused on the area detector directly instead of upon a focused image in space is also described with improved results under certain circumstances.