Thermoacoustic computed tomography: limits to spatial resolution

William L. Kiser Jr.; Robert A. Kruger

doi:10.1117/12.349572

28 May 1999 Thermoacoustic computed tomography: limits to spatial resolution

Proceedings Volume 3659, Medical Imaging 1999: Physics of Medical Imaging; (1999) https://doi.org/10.1117/12.349572
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

Numerical simulations are a valuable tool in the development of complex systems. They provide the ability to determine the effects of individual parameters on system functionality, and in the case of electronic systems, the ability to examine the system without the limitations introduced by electronic noise. The Thermoacoustic Computed Tomography (TACT) system under development was a natural candidate for numerical analysis. Early versions of the system exhibited exceptional promise, but final image quality was limited by a variety of confounding geometrical and electronic factors. The simulations described in this paper were used to generate the transducer signals that would theoretically be collected by the actual TACT imaging system when a sample was exposed to a pulse of electromagnetic radiation. The simulated data streams were then fed into the actual image reconstruction software to provide images of the 'virtual' phantoms. These images were analyzed and quantified to provide a measure of the system parameters responsible for the image blurs that limit system spatial resolution.

Citation Download Citation

William L. Kiser Jr. and Robert A. Kruger "Thermoacoustic computed tomography: limits to spatial resolution", Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); https://doi.org/10.1117/12.349572

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