What determines the resonant frequency of a pulsed wave transducer?

What determines the resonant frequency of a pulsed wave transducer?
A . Element thickness and pulse repetition frequency
B . Element diameter and speed of sound in element
C . Element diameter and element thickness
D . Element thickness and speed of sound in element

View Answer

Answer: D

Explanation:

The resonant frequency of a pulsed wave transducer is determined by the thickness of the piezoelectric element and the speed of sound within that element. The resonant frequency is inversely proportional to the element thickness and directly proportional to the speed of sound in the material. Thinner elements and higher sound speeds result in higher resonant frequencies, while thicker elements and lower sound speeds result in lower resonant frequencies.

Reference: ARDMS Sonography Principles and Instrumentation guidelines Kremkau,

F. W. (2015). Diagnostic Ultrasound: Principles and Instruments. Elsevier.