{HEAD ~ The flexible probe} has a coaxial cable design that includes {TAIL ~ a piezoelectric element} at a proximal end of the probe 
{ HEAD ~ The flexible probe } has a coaxial cable design that includes { TAIL ~ a piezoelectric element } at a proximal end of the probe
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH