Date of Award
Doctor of Philosophy in Mechanical Engineering - (Ph.D.)
Mechanical and Industrial Engineering
I. Joga Rao
High Intensity Focused Ultrasound (HIFU) is becoming a widely accepted modality for extracorporeal non-invasive hyperthermia and surgical procedures. Since ultrasonic transducers need to operate in various challenging body locations, the arrangement of their array elements can be optimized to improve the capability of controlling focus intensity. In the first part of this dissertation, patterns of pressure field variations with several selected design variables (kerf, transducer element’s number and element’s width-height) are studied. These patterns indicate that there is a more suitable shape and arrangement of transducer elements in a specified area to achieve highest possible pressure. In order to obtain this arrangement, a Genetic Algorithm (GA) based evolutionary global search method is used to optimize the design shape and the distribution of ultrasonic transducer elements that can deliver maximum pressure at the focus zone.
Arif, Tariq Mohammad, "Fast estimation model of pressure-temperature response for planning focused ultrasound surgery" (2017). Dissertations. 34.