Ultrasound field characteristics analysis of some self-focused Arc-rotating transducers

By analyzing and comparing the ultasound field characteristics of some represntative self-focused arcrotating transducers,of which the feasbitity in heating is explored.The results show that paraboid of revolution hasgood focusing effect and it can form clear focus.The results also show that come and rotating astroid face have uniformaxis focusing effect and relative thin acoustical beams,so they have large acis heating area.Comparing with cone,theinfluence of source parameters to the field distribution of rotating astroid face is small.In the design astroid face is small.In the design of transducers,thedesigner need to design different kinds of transducers according to different tissue so that it can reach the best heatingdffect.