The use of ultrasound for various diagnostic techniques in medicine continues to increase in popularity and complexity. It seems possible that the prediction of the National Science Foun dation that ultrasonic techniques may be used as frequently as X-ray techniques by the end of the decade may indeed be fulfilled. The annual scientific meeting of the American Institute of Ultra sound in Medicine is the only meeting held regularly on the North American continent and devoted solely to the diagnostic use of ultrasound. Under these circumstances it is not surprising to find that both the...

During the last few years the annual scientific meeting of the American Institute of Ultrasound in Medicine has become one of the largest and most important of the yearly meetings in the field of diagnostic ultrasound. At these meetings papers are presented de scribing the latest developments in this field allover the North American continent. The decision of the Executive Board of the American Institute of Ultrasound in Medicine to publish the manu scripts presented at its annual scientific meetings will therefore be welcomed both by workers in the field who are unable to attend the...