Advanced Ultrasonic Tomograph of Children’s Bones
Résumé
This study deals with the development of an experimental device for
performing ultrasonic computed tomography (UCT) on bone in pediatric degrees.
The children’s bone tomographs obtained in this study, were based on the use of a
multiplexed 2-D ring antenna (1 MHz and 3 MHz) designed for performing
electronic and mechanical scanning. Although this approach is known to be a
potentially valuable means of imaging objects with similar acoustical impedances,
problems arise when quantitative images of more highly contrasted media such
as bones are required. Various strategies and various mathematical procedures for
modeling the wave propagation based on Born approximations have been developed
at our laboratory, which are suitable for use with pediatric cases. Inversions of
the experimental data obtained are presented.