Abstract
An imaging approach utilizing a scanning-focused-beam and piezoelectric detection possesses the best inherent sensitivity with potential to produce an effective image with the least tissue exposure to ultrasound. 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 construe tion. Designs for prototype OATs have been made. The construction and testing of the prototypes are initiated.
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Wang, K. et al. (1977). A Transmitter for Diagnostic Imaging—A Progress Report. In: Kessler, L.W. (eds) Acoustical Holography. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0653-6_25
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DOI: https://doi.org/10.1007/978-1-4757-0653-6_25
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