A Transmitter For Diagnostic Imaging

K. Wang; H. Chang; H. Shen; G. Wade; K. Su; M. Lo; S. Elliott

doi:10.1117/12.955059

30 December 1976 A Transmitter For Diagnostic Imaging

K. Wang, H. Chang, H. Shen, G. Wade, K. Su, M. Lo, S. Elliott

Proceedings Volume 0090, Acousto-Optics: Device Development/Instrumentation/Applications; (1976) https://doi.org/10.1117/12.955059
Event: 20th Annual Technical Symposium, 1976, San Diego, United States

Abstract

Several existing real-time systems for ultrasonic imaging are capable of producing impressive orthorgraphic images. However, analysis of their ideal performance shows that these systems are still not as sensitive as desirable for practical diagnostic use when it comes to imaging targets through thick regions. An imaging approach utilizing a scanning-focused-beam and piezoelectric detection possesses the best inherent sensitivity, and thus the potential to produce an effective image with the least tissue exposure to ultra-sound. A possible embodiment of a system based on this highly-desirable approach is being worked on. The key element is an opto-acoustic transducer (OAT) addressed by light carrying a focus-inducing pattern. The OAT must be carefully designed and evaluated before construction. Two basic types of OAT structures have been investigated by means of equivalent-circuit models and computer simulation, which takes into consideration the dependence of OAT performance on device geometry, amplitude and phase distortions, material properties and operating conditions. The simulations indicate that certain configurations with available materials have the proper characteristics to qualify as candidates for OAT construction. Designs for prototype OATs have been made. The construction and testing of the prototypes are underway.

Citation Download Citation

K. Wang, H. Chang, H. Shen, G. Wade, K. Su, M. Lo, and S. Elliott "A Transmitter For Diagnostic Imaging", Proc. SPIE 0090, Acousto-Optics: Device Development/Instrumentation/Applications, (30 December 1976); https://doi.org/10.1117/12.955059

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