SONICS AND ULTRASONICS GROUPS OF I.E.E.E.

The Annual Meeting of the Sonics and Ultrasonics Group of the I.E.E.E. was held in Milwaukee, Wisconsin, I I 14 November 1974. The Procreding.~ of the Meeting can be obtained from I.E.E.E. Inc., 345 East 47th Street. New York, N.Y. 10017, U.S.A. Catalogue No. 74CHOX96.I SU at the price of $15 ($11.75 for members of I.E.E.t.).

The following papers of interest to our readers were presented : 1.

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Progress in Ultrasonic Imaging G. WAIIE, University of California, Santa Barbara, California. U.S.A.

Diagnostic Capabilities of Ultrasound in Medicine Past, Present and Future C. A. KELSEY, Radiology Department, University of Wisconsin Medical School, Madison, Wisconsin, U.S.A.

Calibration and Use of Ultrasonic Probe Transducers E. J. PISA and K. R. ERIKSON. Actron Division, McDonnell Douglas Corp., Mon- rovia, California. U.S.A.

Piezoelectric Transducers as Ultrasonic Power Stan- dards T. L. ZAPF, Natlonal Bureau of Standards, Boulder, Colorado, U.S.A.

Sonic Techniques for Dispersal of Biological Cell Aggregates J. A. RCKINEY, Physics Department, University of Maine, Orono, Maine, U.S.A.

Ultrasonic Biological Effect Exposure System W. D. O’BRIEN, Bureau of Radiological Health, 5600 Fishers Lane (HFX-120), Rockville, Maryland, U.S.A.

Concentration Dependence of Ultrasonic Absorption in Aqueous Solutions of Bovine Serum Albumin S. A. Goss and F. DUNN. Bioacoustlcs Research Laboratory, University of Illinois, Urbana, Illinois, U.S.A.

Shear Properties of Mammalian Tissues L. A. FRIZZEI.L and E. L. CARSTENSEN, Electrical Engineering Dept., Univ. of Rochester, Rochester, New York, U.S.A.

J. F. DYRO, Emergency Care Research Institute, Philadelphia. Penn- sylvania. U.S.A.

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Lipid Content Determination in Whole Fish llsing Ultrasonic Pulse Backscatter M. FREESE and M. A. K. HAMII). Freshwater Institute. 501 University (‘rescent. Wlnni- peg. Manitoba. Canada

Acoustic Emission and Diagnosis of Osteoporosis S. HANA(;UII, G. T. HANNON and R. (;. CI.ISTON, School of Aerospace Englnecrlng. (;eot-gla In\tltute 01 Technology. Atlanta. Georgia. IJ.S.A.

Duplex Scanner II F. E. BARBFR. D. W. BAKER. D. E. STRANI)N~~SS. JK. and J. M. OFSTAD. Center for Bioenglnccrlng. Unlb. of Washington. Seattle. Washington. U.S.A.

Ultrasonic Transit Time Methods for Monitoring the Progress of Obstetrical Labor M. R. NEUMAN, R. N. WOLPSON and I. ZAIXIR. Engineering Design Center. C‘asc Western Reserve Univerylty of Michigan Medical (‘enter. Ann Arbor.

An Ultrasound-Guided Gamma-Ray Probe for Detection of Ocular Melanomas W. L. ROGERS and M. A. WAINSTO(.I(. University of Michigan Medical Center. Ann .4rbor. Michigan, U.S.A.

Absence of the Pulsatile Midline Echo as an Aid in the Determination of Brain Death S. UEMA~SU and A. E. WALKER. Dept. of Neurosurgery, The Johns Hopkins University School of Medicine. Baltimore, Maryland. IJ.S.A.

A-Scope Determination of Cerebral States R. W. KIFNAST. Univ. of Illinois College of Medlclne, ChIcago, Ilhnois, U.S.A.

L. H. HUSSMAK and C. SIRAKI. Stritch School of Medicine. Loyola Univeruty, May- wood, Illinois, U.S.A.

B. OS~ER~AG. Professor Emeritus of Neuropathology. Tuehinpcn University. 74 Tuebingen. West Germany

Advances in Mechanically Scanned Acoustic .Micro- scopy R. A. LEMONS and C. F. Q~JATE, Stanford University, Stanford, California. U.S.A.

The Sonomicroscope L. W. KESSLER, Sonoscope Inc.. Bensenville, Illinois. U.S.A.

Sonics and Ultrasonics Group of I.E.E.E. 483

18. Ultrasonic Data Acquisition and Processing System for 22. Ultrasonic Cardiac Imaging and Image Enhancement Atherosclerotic Tissue and Characterization Techniques J. F. GREENLEAD, F. A. DUCK, W. F. SAMAYOA and D. H. MCSHERRY, S. A. JOHNSON, Digicon Inc., 3701 Kirby Drive, Houston, Texas, U.S.A. Dept. of Physiology and Biophysics, Mayo Foundation, Rochester, Minnesota, U.S.A.

23. Improving the Accuracy of Ultrasonic Left Ventricular Volume Measurements

19. Ultrasonic Transmission Imaging and Blood Flow Measurement Using Continuous Gaussian Noise Source C. P. JETHWA and M. D. OLINGER,

A. F. BOWYER, Cardiology Division, West Virginia University Medical Center, Morgantown, West Virginia, U.S.A.

Michigan State University, Dept. of Electrical Engineer- 24. Computer-Controlled Two-Dimensional Cardiac Motion ing and Systems Science, East Lansing, Michigan, Imaging U.S.A. R. C. WAAG and R. GRAMIAK,

F. J. FRY, University of Rochester, Rochester, New York, U.S.A.

Fortune-Fry Research Laboratories, 410 Beauty Avenue, Room 149, Indianapolis, Indiana, U.S.A.

25. Real Time Mechanical Scanning System Compared with Array Techniques R. C. EGGLETON and K. W. JOHNSTON,

20. A High-Sensitivity Ultrasonic System for Real-Time Indianapolis Center for Advanced Research,

Diagnostic Imaging Indianapolis, Indiana, U.S.A. K. ?. WANG.

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University of Houston, Houston, Texas, U.S.A

G. WADE, University of California, Santa Barbara, California, U.S.A.

26. A Two Dimensional Electronically Focused Imaging Svstem J.“FRASER, J. HAVLICE, G. S. KINO, W. LEUNG, H. J. SHAW, T. WAUCH and D. K. WINSLOW, Microwave Laboratory, Stanford University, Stanford, California, U.S.A.

21. Ultrasonovision 27. A New Acoustic Array for Acoustic Imaging R. S. MEZRICH, K. F. ETZOLD and D. H. R. VILKO- B. A. AULD, C. DESILETS and G. S. KINO, MERSON, Microwave Laboratory, Stanford University, Stanford, RCA Laboratories, Princeton, New Jersey, U.S.A. California, U.S.A.