Ultrasound In Medicine: Volume 1 Proceedings Of The 19th Annual Meeting Of The American Institute Of Ultrasound In Medicine

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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 meetings, but nevertheless wish to follow the latest develop­ ments in their field of interest, and also by members of the Insti­ tute who will wish to be able to refer later to details in papers of interest. It will be our endeavour to ensure that these Annual Proceedings will be in the hands of subscribers no later than four months after the meeting reported. It is hoped that such prompt publication will further enhance their value to those interested in the field of ultrasound in medicine and biology. The Editor gratefully acknowledges the assistance of his secre­ tary, Mrs. Joan Carson, upon whose shoulders fell the burden of re­ typing all the manuscripts in this volume presented in abstract form and who played an invaluable part in the compilation of all the text for photographic printing. D. N.


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ULTRASOUND IN MEDICINE Volume 1 A Continuation Order Plan is available for this series. A continuation order will bring delivery of each new volume immediately upon publication. Volumes are billed only upon actual shipment. For further information please contact the publisher. ULTRASOUND IN MEDICINE Volume 1 Proceedings of the 19th Annual Meeting of the American Institute of Ultrasound in Medicine Edited by Denis White Department of Medicine Queens University Ontario, Canada PLENUM PRESS. NEW YORK AND LONDON Library of Congress Catalog Card Number 74-32484 ISBN-13: 978-1-4613-4445-2 e-ISBN-13: 978-1-4613-4443-8 001: 10.1007/978-1-4613-4443-8 © 1975 American Institute of Ultrasound in Medicine and Plenum Press, New York Softcover reprint of the hardcover 1st edition 1975 A Division of Plenum Publishing Corporation 227 West 17th Street, New York, N.Y. 10011 United Kingdom edition published by Plenum Press, London A Division of Plenum Publishing Company, Ltd. 4a Lower John Street, London, Wl R 3PD, England All rights reserved No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise, without written permission from the Publisher IN MEMORIAM Jacob Stauffer Lehman 1906 - 1974 Fellow of the American Institute of Ultrasound in Medicine. AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE PRESIDENT Gilbert Baum, M. D. VICE PRESIDENT Ross E. Brown, M. D. SECRETARY Donald L. King, M. D. TREASURER Frederick L. Thurstone, M. D. PRESIDENT·ELECT William M. McKinney, M. D. PAST PRESIDENT Denis N. White, M. D. EXECUTIVE BOARD Donald Baker, B. S. Ralph W. Barnes, Ph. D. Kenneth R. Erikson, Ph.D. Barry B. Goldberg, M. D. Professor Elizabeth Kelly Fry Robert Kraus, M. D. Padmakar P. Lele. M. D. George R. Leopold, M. D. Richard A. Meyer, M. D. Patricia H. Nuss, R. N. Wesley L. Nyborg, Ph.D. Richard L. Popp, M. D. Renate Soul en, M. D. William B. Steel, M. D. Michael A. Wainstock, M. D. Fred Winsberg, M. D. Marvin C. Ziskin, M. D. EXECUTIVE SECRETARY Virginia C. Schutz. Foreword 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 m