Design of an angled ultrasonic transducer for blood flow measurement applications

This paper describes the design and construction of an angled ultrasonic transducer for blood flow measurement. The transducer was constructed using as sensing element, a commercial 8 MHz PIC255 piezoceramic, Insulcast 501 and Rexolite 4422 as backing and matching layer materials respectively. The objective of this work was to design and construct a single element transducer for pulsed wave Doppler blood flow measurement, with an angle of 60° resonating at approximately 8 MHz. Results show that the overall performance of the transducer fulfils the requirements of its design and it is possible to use it for blood flow measurement applications.