"piezoelectric polyvinylidene fluoride (PVDF) is useful in those high frequency, high bandwidth transducer that needs focusing to a certain region 4. PVDF also has low acoustic impedance similar to water, thus is useful in making ultrasound pulses with good temporal resolution 5."
Expected headings
"Components"
"Ultrasound beam production"
"dampens the resonant vibrations in the element which creates a shorter spatial pulse length; this allows for better axial resolution for imaging of organs and high bandwidth to receive reflected echoes 3"