Abstract: This application relates to a transmitting/receiving dual-mode focused ultrasonic transducer and a microbubble cavitation image visualization method using the transducer. In one aspect, a plurality of mounting holes are formed in a transducer body with a limited area according to the Fibonacci pattern that allows for the maximum number of objects to be mounted in the transducer body. A plurality of transducer elements are mounted in the mounting holes so as to form a transducer element arrangement having highly nonlinearity. According to various embodiments, microbubble cavitation can be induced and visualized by using a small number of receiving elements.

Abstract: This application relates to a multi-channel ultrasound stimulator. The ultrasound stimulator includes a housing with a concavely curved inner surface and a plurality of channels disposed on the inner surface and spaced from each other at regular intervals. Each of the channels can emit ultrasonic waves independently of each other, and the channels form a wide ultrasound field range. The channels are arranged in a zigzag pattern. The channels can generate an ultrasound field to uniformly stimulate breast tissue of a patient due to the arrangement thereof on the concavely curved surface. A rotator rotates the housing about a rotary shaft to increase an application range of ultrasonic waves and to prevent local concentration of application of ultrasonic waves. A controller operates the channels according to a predetermined operation sequence according to the intensity of ultrasonic waves of each channel, thereby preventing excessive stimulation and enabling uniform stimulation.